Liebert, Robert M., 1942-, author
Prentice-Hall, 1986
Buku Teks
Hurlock, Elizabeth Bergner, 1898-, author
Tata McGraw-Hill, 1979
Buku Teks
Upton, Penney, author
Learning Matters, 2011
Buku Teks
Patrick Leman, Andy Bremner, Ross D Parke, Mary Guavain
McGraw-Hill, 2012
Buku Teks
Miller, Patricia H., author
Worth Publisher, 2002
Buku Teks