Goris Mustaqim, author
Dompet Dhuafa, 2013
Buku Teks
Adelman, Philip J., author
Pearson, 2007
Buku Teks
Shim, Jae K., author
McGraw-Hill, 2007
Buku Teks
Sihler, William W., author
[American Management Association, ], 2004
eBooks
Postyn, Sol, author
Lifetime Learning, 1982
Buku Teks