Schollhammer, Hans, author
John Wiley & Sons, 1979
Buku Teks
Sondeno, Stanley R., author
Business Publications, 1985
Buku Teks
Macfarlane, William N., author
McGraw-Hill, 1977
Buku Teks
Pickle, Hal B., author
John Wiley & Sons, 1984
Buku Teks
Steinhoff, Dan, author
McGraw-Hill, 1978
Buku Teks