Springer-Verlag, 1992
Buku Teks
[publisher not identified], [date of publication not identified]
Naskah
edited by G.E. Kearney, P.R. de Lacey and G.R. Davidson
John Wiley and Sons, 1973
Buku Teks
Dedy Afianto
Fakultas Ilmu Pengetahuan dan Budaya Universitas Indonesia, 1998
UI - Skripsi Membership
Elwell, Fayette H.
Ginn & Co, 1949
Buku Teks