Grayling, A. C.
Blackwell Publishers, 1997
Buku Teks
Sarlito Wirawan Sarwono, author
LPSP3, 2005
Buku Teks
Daldiyono Hardjodisastro, author
[publisher not identified], [date of publication not identified]
Buku Teks
Hayon, Yohanes Pande, author
ISTN, 2000-2005
Buku Teks
Lloyd, Christopher
Blackwell Publishing, 1993
Buku Teks