Beadle, John D.
Macmillan, 1972
Buku Teks
Schwab, Glenn Orville, 1919-, author
John Wiley & Sons, 1993
Buku Teks
Pansini, Anthony J., author
The Fairmont Press, 1994
Buku Teks
Nelson, John D.
John Wiley & Sons, 1992
Buku Teks
Smith, Pauline
The Vanguard Press, 1964
Buku Teks