Aron, J.D., author
Addison-Wesley, 1974
Buku Teks
Stroup, Jim, author
American Management Association, 2008
eBooks
Liya Agustin Umar, author
Fakultas Kedokteran Universitas Indonesia, 2015
UI - Tesis (Membership)
Jogiyanto H.M. (Hartono M.), author
Andi, 1990
Buku Teks
Fitria Dwi Ananda
Andi, 1991
Buku Teks