Travis, Charles, author
Clarendon Press, 1989
Buku Teks
Banerjee, Nikunja Vihari, author
George Allen and Unwin, 1958
Buku Teks
Gert J. J. Biesta
Springer, 2012
eBooks
Shafira Andini, author
Fakultas Psikologi Universitas Indonesia, 2020
UI - Skripsi (Membership)
Lynch, Kevin, author
MIT Press, 1990
Buku Teks