Schuster, Clara Shaw
Little, Brown & Company, 1980
Buku Teks
Newman, Barbara M., author
Thomson and Wadsworth, 2006
Buku Teks
Hurlock, Elizabeth Bergner, 1898-, author
Jakarta, 1993
Buku Teks
Dacey, John S., author
McGraw-Hill, 2002
Buku Teks
Papalia, Diane E., author
McGraw-Hill, 1992
Buku Teks