Long, Larry E.
Prentice-Hall, 1994
Buku Teks
Davis, Gordon B.
McGraw-Hill, 1978
Buku Teks
Sanders, Donald H.
McGraw-Hill, 1983
Buku Teks
Chapin, Ned
Van Nostrand Reinhold , 1971
Buku Teks
Berkeley, Edmund Callis
Reinhold Publishing Corporation, 1962
Buku Teks