Lowman, Rodney L., author
American Psychological Association, 2016
Buku Teks
Leavitt, Harold J., author
University of Chicago Press, 1958
Buku Teks
Shulman, Lawrence, author
Brooks/Cole Cengage Learning, 2012
Buku Teks
Machi, Antonio, author
Springer, 2012
eBooks
O`Hara, Agi, author
Oxford University Press, 2014
Buku Teks