McGraw-Hill, 1973
Buku Teks
by M.B. Lourenco Filho ... [and others]
UNESCO, 1953
Buku Teks
Richards, Jack C.
Cambridge University Press, 2005
Buku Teks SO
Dian Hartiningsih
Fakultas Psikologi Universitas Indonesia, 2015
UI - Tesis Membership
Siti Khadijah
Fakultas Psikologi Universitas Indonesia, 2024
UI - Tesis Membership