Bowley, Arthur
Institute of Personnel Management , 1972
Buku Teks
Patton, Arch
McGraw-Hill, 1961
Buku Teks
Ellig, Bruce R.
McGraw-Hill , 1982
Buku Teks
Nendi Bahtiar, author
2019
UI - Skripsi (Membership)
Ivone Kusuma Wardani, author
2018
UI - Skripsi (Membership)