[publisher not identified], [date of publication not identified]
Naskah
[publisher not identified], [date of publication not identified]
Naskah
S. Hadiwiyata
Thahaja Soerakarta, 1923
Buku Klasik
Butarbutar, Tiodora Br.
Fakultas Psikologi Universitas Indonesia, 2004
UI - Skripsi Membership
Fromm, Erich
Harper Collins, 2000
Buku Teks