edited by Carolyn E. Carlson, Betty Blackwell
J.B. Lippincott , 1978
Buku Teks
Sommer, Robert, author
New York, 2002
Buku Teks
Howell, David C., author
Thomson Higher Education, 2004
Buku Teks
Sanford, Edward, author
Winthrop, 1977
Buku Teks
Jaccard, James, author
Wadsworth, 1983
Buku Teks