Marslan, Douglas
Holt, Rinehart and Winston, 1964
Buku Teks
Bailey, Paul C.
International Textbook Company, 1969
Buku Teks
Mader, Sylvia S.
McGraw-HIll, 1996
Buku Teks
by Robert J. Brooker ... [and others]
McGraw-Hill, 2008
Buku Teks
Raven, Peter H.
WCB, McGraw-Hill, 1996
Buku Teks