Lovaglia, Anthony R., author
Harper & Row, 1966
Buku Teks
Krause, Eugene F.
Prentice-Hall, 1978
Buku Teks
Nichols, Eugene D.
Holt, Rinehart and Winston, 1971
Buku Teks
Peterson, John M.
Prindle, Weber & Schmidt Inc, 1971
Buku Teks
Bitter, Gary G., author
Allyn and Bacon, 1989
Buku Teks