Shaffer, David R. (David Reed), 1946-
Wadsworth/Thomson Learning, 2002
Buku Teks
Santrock, John W.
McGraw-Hil , 2005
Buku Teks
Santrock, John W.
McGraw-Hill Education, 2019
Buku Teks SO
Stone, L. Joseph
Random House, 1984
Buku Teks
Santrock, John W.
University of Texas, 1990
Buku Teks