Majaro, Simon, author
George Allen & Uniwin, 1982
Buku Teks
Fayerweather, John
Prentice-Hall, 1965
Buku Teks
Heck, Harold J.
American Management Association, 1972
Buku Teks
Cateora, Philip R., author
McGraw-Hill, 2008
Buku Teks
Keegan, Warren J., author
Pearson Education , 2015
Buku Teks