Kroenke, David M., 1946-
Prentice-Hall, 2006
Buku Teks
Kroenke, David M., 1946-
Pearson - Prentice Hall, 2004
Buku Teks
Rob, Peter
Course Technology, 2002
Buku Teks
Rob, Peter
Wadsworth, 1993
Buku Teks
Kroenke, David M., 1946-
Science Research Association, 1983
Buku Teks