Yamane, Taro, author
New York University, 1967
Buku Teks
Oakes, Michael P., author
Edinburgh University Press, 1998
Buku Teks
Pagano, Robert R., author
Wadsworth and Cengage Learning, 2013
Buku Teks
Burt, James E., author
Guilford Press, 1996
Buku Teks
Knapp, Rebecca Grant, author
John Wiley & Sons, 1985
Buku Teks