Morrison, David, author
Saunders College, 1990
Buku Teks
Hoyle, Fred, author
Harper & Brothers, 1955
Buku Teks
Jastrow, Robert, author
John Wiley & Sons, 1977
Buku Teks
Arny, Thomas T., author
McGraw-Hill, Higher Education, 2004
Buku Teks
Hodge, Paul W.
McGraw-Hill, 1974
Buku Teks