Clark, Frank J., author
Prentice-Hall, 1972
Buku Teks
Orilia, Lawrence, author
John Wiley & Sons, 1972
Buku Teks
Gleim, George A., author
Prentice-Hall, 1971
Buku Teks
Gregory, Robert Henry, author
Wadsworth, 1960
Buku Teks
Orilia, Lawrence, author
John Wiley & Sons, 1972
Buku Teks