Japan International cooperation agency, 1977
Buku Teks
Magethy Bey, author
Pionir Jaya, 1986
Buku Teks
McGrow Hill Book , 1981
Buku Teks
edited by John L. Sheppard
Camberland Collegge of Health, 1984
Buku Teks
edited by Laura A. Cushman and Marcia J. Scherer
American Psychological Association, 1995
Buku Teks