Werther, William B.
Da ren, xiao de you hua yao shuo : gei jing li de 100 feng xin = adults, there is little to say : to the manager of the 100 letters = 大人,小的有話要說 : 給經理的100封信
Tianxia Wenhua Chuban, 1990
 Buku Teks
Werther, William B.
Da ren, xiao de you hua yao shuo, gei jingli de 100 feng xin
Tian xia wen hua chu ban gu fen you xian gong si,, 1990
 Buku Teks
Tagliaferri, Louis E.
Successful supervision : a self-teaching guide
John Wiley & Sons, 1979
 Buku Teks
Leonard , Edwin C., Jr.
Supervision : concepts and practices of management
South-Western Cengage Learning, 2013
 Buku Teks
Kay, Brian R.
The challenge of supervision
McGraw-Hill, 1961
 Buku Teks SO