edited by Cathy E. Lloyd ... [and others]
SAGE Publications, 2007
Buku Teks
Allender, Judith Ann
Wolters Kluwer, Lippincott Williams & Wilkins, 2010
Buku Teks
edited by Lorenz K. Y. Ng and Devra Lee Davis
Van Nostrand Reinhold, 1981
Buku Teks
Philadelphia : Open University Press, 2002,
Buku Teks
Milio, Nancy
Davis, 1983
Buku Teks