Long, Larry E., author
Reston Publishing, 1979
Buku Teks
Vazsonyi, Andrew, author
Richard D. Irwin, 1980
Buku Teks
Potter, George B., author
Business, 1984
Buku Teks
London, Keith R., author
Petrocelli Books, 1974
Buku Teks
Waters, S. J., author
NCC Publications, 1979
Buku Teks