Rungapadiachy, Dev M., author
Butterworth-Heinemann, 1999
Buku Teks
Nanda Ranti Rachmi, author
Fakultas Psikologi Universitas Indonesia, 2020
UI - Skripsi (Membership)
Academic Press, 2013
eBooks
Curran, Desmond, author
Churchill, Livingtone, 1972
Buku Teks
Marcheli Fitria, author
Fakultas Psikologi Universitas Indonesia, 2014
UI - Skripsi (Membership)