Ferdi Julias Chandra, author
Fakultas Ilmu Pengetahuan dan Budaya Universitas Indonesia, 2012
UI - Skripsi (Membership)
Good, Yohn M
Heath, 1970
Buku Teks
Linebarger, Paul Myron Anthony, 1913-1966, author
York D van Nostrand, 1954
Buku Teks
Parker, R.S.
Prentice Hall International, 1978
Buku Teks
Bailey, Stephen K., author
Henry Holt, 1957
Buku Teks