Kimball, Linda Amy
University Microfilms International, 1979
Buku Teks
Dito anurogo, author
Gramedia Pustaka Utama, 2016
Buku Teks
Milburn, Michael P., author
The Crossing Press, 2001
Buku Teks
Edited by Russell L. Cecil and Robert F. Loeb
W.B. Saunders, 1951
Buku Teks
Konner, Melvin, author
BBC Books, 1993
Buku Teks