Beach, Dale S., author
Macmillan, 1980
Buku Teks
Beach, Dale S., author
Macmillan, 1975
Buku Teks
Flippo, Edwin B., author
McGraw-Hill, 1984
Buku Teks
Jucius, Michael J., author
Richard D. Irwin, 1949
Buku Teks
Heckman, I. L., author
Charles E. Merrill, 1962
Buku Teks