Artikel Jurnal
Bradley, Ben, author
Wiley, 2015
Buku Teks
Fakultas Psikologi Universitas Indonesia, 2009
UI - Tesis (Membership)
Drucker, Peter F. (Peter Ferdinand), 1909-2005, author
Heinemann Profesional , 1990
Buku Teks
edited by Rob Elkington, Madeleine Van Der Steege, Judith Glick-Smith, Jennifer Moss Breen
Emerald, 2017
eBooks