Lucas, Henry C.
McGraw-Hill, 1985
Buku Teks
Saldarini, Robert A.
Macmillan Publishing Company, 1990
Buku Teks
Saldarini, Robert A.
Macmillan Publishing Company, 1989
Buku Teks
Hall, V.J.
Prentice-Hall, 1988
Buku Teks
Li, David H.
Science Research Associates, 1972
Buku Teks