Frantz, Harper W., author
W.H. Freeman, 1968
Buku Teks
by Willis H. Johnson...[et al.]
Holt, Rinehart and Winston, 1974
Buku Teks
Joesten, Melvin, author
Thomson Brooks/Cole, 2007
Buku Teks
staff of Research and Education Association ; M. Fogiel, director
Research and Education Association, 1987
Buku Teks
Fairley, James L., author
Van Nostrand , 1966
Buku Teks