Sternberg, Robert J.
Cognition
Wadsworth and Cengage Learning, 2012
 Buku Teks
Ashcraft, Mark H.
Cognition
Pearson, 2014
 Buku Teks
A Handbook for the identification of cephalopod beaks
edited by Malcolm R. Clarke
Clarendon Press, 1986
 Buku Referensi
A handbook for the identification of cephalopod beaks
edited by Malcolm R. Clarke
Clarendon Press, 1986
 Buku Teks
Leahey, Thomas Hardy
Learning and Cognition
New Jersey, 2000
 Buku Teks