Golembiewski, Robert T.
McGraw-Hill Book Company, Inc., 1965
Buku Teks
Ball, Robert E.
Routledge and Kegan Paul, 1983
Buku Teks
Goldman, Alan H., author
Routledge, 1990
Buku Teks
Brandt, Richard B., author
Prentice-Hall, 1959
Buku Teks
Sutan Takdir Alisjahbana, author
University of Malaya Press, 1986
Buku Teks