Depok : FS UI, 1992
UI - Makalah dan Kertas Kerja
Semmler, Clement
Buku Teks
Semmler, Clement
University of Queensland Press [distributed by International Scholarly Book Services, 1972
Buku Teks
Ardam Rafif Trisilo, author
Fakultas Ilmu Pengetahuan dan Budaya Universitas Indonesia, 2015
UI - Skripsi (Membership)
Bowden, Edwin T., author
Ohio State University Press, 1968
Buku Teks