Strauss, George, author
Prentice Hall of India, 1985
Buku Teks
Monks, Joseph G., author
McGraw-Hill, 1987
Buku Teks
Olumoroti, Olumuyiwa John, author
Elsevier, 2005
Buku Teks
edited by W. Arthur Cullman and Harry R. Knudson
Prentice-Hall, 1972
Buku Teks
Brundage, Dorothy J., author
Mosby, 1980
Buku Teks