by Robert Jurmain, Harry Nelson, Lynn Kilgore, Wenda Trevathan
Wadsworth, 2001
Buku Teks
Stein, Philip L.
McGraw-Hill, 1982
Buku Teks
Nelson, Harry
West Publishing, 1988
Buku Teks
by Robert Jurmain ... [and others]
Wadsworth and Cengage Learning, 2012
Buku Teks
Jolly, Clifford J.
McGraw-Hill, 1995
Buku Teks