O`Hanlon, John F., author
John Wiley & Sons, 1980
Buku Teks
Buku Teks
Griffith, H. Winter, author
Fisher Books, 1998
Buku Teks
De Chiara, Joseph, 1929-, author
McGraw-Hill International Edition, 1991
Buku Referensi
Davenport, Dawn, author
Broadway Books, 2006
Buku Teks