editor, Roger L. Brockenbrough, Frederick S. Maerritt
McGraw-Hill, 1994
Buku Referensi
Lothers, John E.
Prentice-Hall, 1965
Buku Teks
Spiegel, Leonard
Regents, 1993
Buku Teks
edited by Roger L. Brockenbrough, Frederick S. Merrit
McGraw-Hill, 2011
Buku Teks
Ambrose, James E.
John Wiley & Sons, 1997
Buku Teks