Kaufman, Peter B.; Carlson, Thomas F.; Dayanandan, P.; Evans, Michael L.; Fisher, Jack B.; Parks, Clifford; Wells, James R.
Harper & Row, 1989
Buku Referensi
Raven, Peter H.
Worth Publishers, 1992
Buku Teks
Laetsch, Watson M.
Little, Brown, 1979
Buku Teks
Corner, E.J.H.
The World Publishing Company, 1964
Buku Teks
T. Elliot Weier ... [and others]
John Wiley & Sons, 1974
Buku Teks