:Barker, Roger "[https://www.spssi.org/index.cfm?fuseaction=document.viewdocument&ID=3F28EB86AE4CA3BB2EE025BE0093BF040DF534F490344D630568A7B6A4F9D6BE8A419D9A5BFC2C3737450814D3839CB6 On the Nature of the Environment]", ''Journal of Social Issues'', October 1963.
:Gibson, James J. (1966) [https://buffalo.box.com/s/v3u96qrw6i2vd2uwn3e6x0i7i0i9v0xe ''The Senses Considered as Perceptual Systems'']
:Gibson, James J.  (1979) [https://buffalo.box.com/s/8ouroqc5475w09rtuowozqy5xdr0dxp0 ''The Ecological Approach to Visual Perception'']
:Parsons, Talcott (1951) [https://buffalo.box.com/s/ngcv5zzaaoa1gvemc7pysbvbtnkf4d8y ''The Social System'']
:Peirce, C. S. "[https://en.wikisource.org/wiki/Popular_Science_Monthly/Volume_12/January_1878/Illustrations_of_the_Logic_of_Science_II How to Make our Ideas Clear]"

:A. Chemero, "[https://www.academia.edu/attachments/66619419/download_file?st=MTYyODc4NjIwMCw2OC4xMzMuMTQuNjgsOTAzMTE%3D&s=profile&ct=MTYyODc4NjIwNSwxNjI4Nzg2NTk0LDkwMzEx] An Outline of a Theory of Affordances]", ''Ecological Psychology'', 15(2), 181–195
:Harry Heft, [https://buffalo.box.com/s/39nnbjmw3jadkwbvetjiz5c5pjrnyocy ''Ecological Psychology in Context : James Gibson, Roger Barker, and the Legacy of William James's Radical Empiricism'']
:Peter Munz, [https://buffalo.box.com/s/p5eqe7orynzykw55cweyjqvxr2y3tm4p Philosophy and the Mirror of Rorty], ''Philosophy of the Social Sciences'' 14 (2):195-238 (1984)
:Thomas Natsoulas [https://buffalo.box.com/s/y7txgbmk9va735ltaz44z11ozif0jeg9 Gibson's Environment, Husserl's "''Lebenswelt''," the World of Physics, and the Rejection of Phenomenal Objects], ''The American Journal of Psychology'', Autumn, 1994, Vol. 107, No. 3 (Autumn, 1994), pp. 327-358
:Barry Smith (ed.), ''[https://philpapers.org/archive/SMIFOG.pdf Foundations of Gestalt Theory], Munich, 1988.
:Barry Smith, "[http://ontology.buffalo.edu/eco/Ecological_Psychology.pdf Toward a Realistic Science of Environments]", ''Ecological Pschology'' 21 (2), April-June 2009, 121-130
:Barry Smith [https://philpapers.org/archive/SMIOAT.pdf “Objects and Their Environments: From Aristotle to Ecological Psychology”], in Andrew Frank, Jonathan Raper and Jean-Paul Cheylan (eds.), ''The Life and Motion of Socio-Economic Units'' (GISDATA 8), London: Taylor and Francis, 2001, 79–97. [On Roger Barker on behavior settings]
:Frederik Stjernfelt, "[https://philpapers.org/archive/STJMAS.pdf Mereology and Semiotics]", ''Sign Systems Studies'' 28:73-97 (2000)

:Fumiaki Toyoshima and Adrien Barton "[http://ceur-ws.org/Vol-2347/paper9.pdf A Formal Representation of Affordances as Reciprocal Dispositions]", ''TriCoLore'' (C3GI/ISD/SCORE), 2018
:Rob Withagen and Anthony Chemero [https://buffalo.box.com/s/u5pdxvmxoafl0heomoh84xgl7h1psnzm Affordances and classification: On the significance of a sidebar in James Gibson’s last book], ''Philosophical Psychology'', Vol. 25, No. 4, August 2012, 521–537
:Robert H. Wozniak, [https://psychclassics.yorku.ca/Watson/commentary.htm "Commentary on Watson (1913)"]