Abbott, Lawrence, author
Harcourt, Brace and World, 1967
Buku Teks
Lindauer, John, author
Saunders , 1977
Buku Teks
McKenzie, Richard B., author
McGraw-Hill, 1978
Buku Teks
Meyers, Albert, author
Prentice-Hall, 1956
Buku Teks
Gill, Richard Thomas, 1927-2010, author
Prentice-Hall, 1967
Buku Teks