edited by Rosemary Clark, D.W. Livingstone, and Harry Smaller
Sense, 2012
eBooks
editors, Marshall Goldsmith, Howard Morgan, Alexander J. Ogg
John Wiley & Sons, 2004
Buku Teks SO
Zand, Dale E.
McGraw-Hill, 1981
Buku Teks SO
Cleave, Peter
Victory University Press, 1989
Buku Teks SO
edited by Susan J. Peters
Garland, 1993
Buku Referensi