Allen, Theodore
McGraw-Hill Kogakusha, c1972
Buku Teks SO
Roberson, John A.
Houghton Miffiln, 1975
Buku Teks SO
Shepherd, D.G. [Dennis G.]
Harcourt, Brace World, 1965
Buku Teks SO
Androsov, P.
Foreign Languages, [Date of publication not identified]
Buku Teks SO
Sutomo
Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Indonesia, 1997
UI - Tesis Membership