by Barbara Kozier ... [and others]
Prentice-Hall, 2004
Buku Teks
edited by Gerald L. Mandell, John E. Bennett and Raphael Dolin
Churchill Livingstone, 1995
Buku Referensi
edited by Manfred E. Wolff
John Wiley & Sons, 1995
Buku Teks
Benedict, Ruth
Columbia University Press, 1935
Buku Teks
1951
Buku Teks