Chew, Al H.
Houghton Mifflin, 1976
Buku Teks
Nichols, Eugene D.
Rinehart Press, 1975
Buku Teks
Youse, Bevan K., author
Allyn and Bacon, 1974
Buku Teks
Paige, Donald D.
Prindle, Weber & Schmidt Inc., 1969
Buku Teks
Stoddard, Edward
The Dial Press, 1962
Buku Teks