Smith, T. Lynn
FA Davis, 1970
Buku Teks
Chitambar, J. B.
Wiley Eastern Limited, 1973
Buku Teks
Loomis, Charles P., author
Prentice-Hall, 1957
Buku Teks
Loomis, Charles P.
Prentice Hall Inc., 1957
Buku Teks
Raharjo, author
Gadjah Mada University Press, 2004
Buku Teks