Hoy, Wayne K., author
Random House , 1978
Buku Teks
Hoy, Wayne K., author
McGraw-Hill, 2013
Buku Teks
The University of Chicago Press, 1964
Buku Teks
Allyn and Bacon , 1971
Buku Teks
Lutz, Frank W.
Charles E. Merrill Publishing Company, 1969
Buku Teks