Tri Harjanto
Pustaka Rumpun Pena, 2011
Buku Teks
Hiam, Alexander
Elex Media Komputindo, 1994
Buku Teks
Tian, Kelly
Quorum Book, 2002
Buku Teks
Allard, Patsy Bailey
AMA Membership Publications Division, American Management Associations, 1983
Buku Referensi
Rasyid Sartuni
Fakultas Ilmu Pengetahuan dan Budaya Universitas Indonesia, 1980
UI - Skripsi Membership