Tilley, Andrew
Pineapple Press, 1990
Buku Teks
Martin, David W., 1943-, author
Book/Cole Pub., 1991
Buku Teks
Martin, David W., 1943-, author
Thomson, Wadsworth, 2008
Buku Teks
Martin, David W., 1943-, author
Thomson Wadsworth, 2004
Buku Teks
Dubois, Philip H., author
Harper & Rpw, 1965
Buku Teks