Chambers, John C. (John Carlton), 1928-, author
John Wiley & Sons, 1974
Buku Teks
Budworth, Geoffrey
Jaico Pub, 2002
Buku Teks
Harvard Business School Press, 2004
Buku Teks
Byron, Christipher
John Wiley & Sons, 2004
Buku Teks
Epstein, Robert, author
McGraw-Hill, 2000
Buku Teks