Armand Luthfan
Fakultas Ilmu Pengetahuan dan Budaya Universitas Indonesia, 2015
UI - Skripsi (Membership)
edited by William F. Bluhm, Daniel D. Skwire, Stephen J. Kaczmarek and Kristi M. Bohn
ACTEX Publications, 2012
Buku Teks
Mbughuni, L.A.
The UNESCO Press, 1974
Buku Teks
Corey, Gerald
Brooks/Cole, Cengage Learning, 2012
Buku Teks
John Wiley, 1964
Buku Teks