Pulungan, Aman B., author
2015
UI - Disertasi (Membership)
Cummings, Michael R., author
Brooks/Cole, Cengage Learning, 2011
Buku Teks
Harris, Harry, author
Gadjah Mada University Press, 1980
Buku Teks
Wyandt, Herman E., author
Springer, 2011
eBooks
Montagu, Ashley, 1905-1999, author
A Mentor Book, 1960
Buku Teks