Clutterbuck, David, 1947-, author
McGraw-Hill , 1993
Buku Teks
Mutia Fadila, author
Fakultas Ekonomi dan Bisnis Universitas Indonesia, 2018
UI - Skripsi (Membership)
Vance, Stanley C., author
McGraw-Hill , 1983
Buku Teks
Harvard Business Scholl Press, 2000
Buku Teks
May Fransisca, author
2013
UI - Skripsi (Membership)