Mehler, Jacques, author
Cambridge, 2001
Buku Teks
Flavell, John H., author
Prentice-Hall, 1993
Buku Teks
Gallistel, C. R., author
Wiely-Blackwell, 2009
Buku Teks
Purnama Fitri, author
Fakultas Kedokteran Universitas Indonesia, 2018
UI - Tesis Membership
Joevarian, author
2014
UI - Skripsi (Membership)