Santrock, John W.
McGraw-Hill, 2012
Buku Teks
Santrock, John W.
McGraw-Hill , 2018
Buku Teks
Whitmire, Richard
[American Management Association, ], 2010
eBooks
Gredler, Margaret E.
The Guilford Press, 2008
Buku Teks
Ormrod, Jeanne Ellis
Pearson Educational, Inc., 2003
Buku Teks