International Secretariat Institute of Pacific Relations, 1943
Buku Teks
R. Tuty Nur Mutia, author
Faculty of Humanities University of Indonesia, 2012
Artikel Jurnal
Holland, William L.
Macmillan, 1953
Buku Klasik
Denza, Eileen, 1937-, author
Oxford University Press, 2016
Buku Teks
[Fakultas Psikologi Universitas Indonesia, ], 2011
UI - Makalah dan Kertas Kerja