Rouner, Arthur A.
Forgiveness: the road to reconciliation
Writers Club Press, 2002
 Buku Teks
Parrott, Les
Kiat Menghadapi Bermacam-macam Sifat Manusia di sekitar Anda
Metanoia Publishing, 2000
 Buku Teks
Peck, M. Scott [Morgan Scott], 1936-2005
The road less travelled : a new psychology of love, traditional values and spiritual growth
Rider, 2008
 Buku Teks SO
Peck, M. Scott [Morgan Scott], 1936-2005
Xin ling di tu : zhui qiu ai he cheng zhang zhi lu = the road less traveled = 心靈地圖 : 追求愛和成長之路
Tian Xia Wen Hua, 1966
 Buku Teks
DuBrin, Andrew J.
Applying psychology : individual dan organizational effectiveness
Prentice-Hall, 2000
 Buku Teks