Apple, James MacGregor, 1915-1978, author
John Wiley & Sons, 1977
Buku Teks
designed and produced by serasia limited for asian productivity organization
Asian Productivity Organization , 1971
Buku Teks
Meyers, Fred E., author
Pearson/Prentice Hall, 2005
Buku Teks
Meyers, Fred E., author
Prentice-Hall, 2000
Buku Teks
Apple, James MacGregor, 1915-1978, author
The Ronald Press , 1950
Buku Teks