Dessler, Gary, 1942-
Personnel management: modern concepts and techniques
Reston Publishing, 1978
 Buku Teks
Human relations in modern busines : a guide for action
Prentice-Hall, 1949
 Buku Teks
Tregold, R.F.
Human relations in modern industry
International University Press, 1950
 Buku Teks
Crick, Francis, 1916-
The astonishing hypothesis: the scientific search for the soul
Simon and Schuster, 1994
 Buku Teks SO
Frankl, Viktor E., 1905-1997-
Man's search for meaning
Noura Books, 2017
 Buku Teks SO