Linkemer, Bobbi
Binarupa Aksara, 1990
Buku Teks
Beshara, Tony
Amacom, 2011
Buku Teks
Resume, Service
ARCO Publishing Company, Inc., 1967
Buku Teks
Feizy Marin Amiroeddin
Universitas Indonesia, 2016
UI - Tesis (Membership)
Moffatt, Thomas L.
Harper & Row , 1979
Buku Teks