editor Ronald J. Prinz
Jessica Kingsley Publishers, 1991
Buku Referensi
Merrell, Kenneth W., author
Routledge, 2007
Buku Teks
Huberty, Thomas J., author
Springer, 2012
eBooks
edited by Ronald J. Prinz
Jessica Kingsley, 1991
Buku Teks
Ross, Alan O., author
McGraw-Hill, 1974
Buku Teks