Michaelis, David, author
Harper Collins, 2007
Buku Teks
Craven, Paul R., author
Dickenson Publishing, 1968
Buku Teks
Schulz, Erich J.
McGraw-Hill , 1983
Buku Teks
Schulz, Erich J.
McGraw-Hill, 1982
Buku Teks
Schulz, Erich J.
McGraw-Hill, 1982
Buku Teks