Allan M. Collins; M. R. Quillian (1969). “Retrieval time from semantic memory”. Journal of verbal learning and verbal behavior8 (2): 240–247. doi:10.1016/S0022-5371(69)80069-1.
Allan M. Collins; M. Ross Quillian (1970). “Does category size affect categorization time?”. Journal of verbal learning and verbal behavior9 (4): 432–438. doi:10.1016/S0022-5371(70)80084-6.
Allan M. Collins; Elizabeth F. Loftus (1975). “A spreading-activation theory of semantic processing”. Psychological Review82: 407–428. doi:10.1037/0033-295x.82.6.407.
Quillian, M. R. (1969). “The teachable language comprehender: a simulation program and theory of language”. Communications of the ACM12 (8): 459–476. doi:10.1145/363196.363214.