Levesque, Roger J. R., author
Oxford University Press, 2016
eBooks
Shaffer, David R. (David Reed), 1946-, author
Wadsworth/Thomson Learning, 2002
Buku Teks
Santrock, John W., author
Wm. C. Brown Publisher, 1984
Buku Teks
Wenar, Charles, 1922-, author
McGraw-Hill , 1994
Buku Teks
Kerig, Patricia K., author
McGraw-Hill, 2012
Buku Teks