Joy, O. Maurice
Richard D. Irwin. Inc., 1980
Buku Teks
Levi, Maurice D., 1945-
Singapore McGraw-Hill Book Co 1990,
Buku Teks
Schall, Lawrence D., author
McGraw-Hill, 1986
Buku Teks
Henderson, Glenn V., author
[publisher not identified], [date of publication not identified]
Buku Teks
Henderson, Glenn V., author
Addison-Wesley, 1984
Buku Teks