Hadi Kusalamwardi
Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Indonesia, 1985
UI - Skripsi Membership
Cardenas, Alfonso F.
Allyn and Bacon, 1979
Buku Teks
Martin, James
Prentice-Hall, 1976
Buku Teks
edited by Auerbach Pub. Inc.
Prentice-Hall, 1981
Buku Teks
Kruglinski, David
McGraw-Hill, 1983
Buku Teks