Glueck, Sheldon
Kraus Reprint , 1976
Buku Teks
Spohr, Kristina, author
Oxford University Press, 2016
eBooks
Khoo, Kheng Hor, author
Bhuana Ilmu Populer , 2003
Buku Teks
Lawrence, Mark Atwood, author
Oxford University Press, 2010
Buku Teks
Remini, Robert V.
Norton & Company , 1967
Buku Teks