Heisler, Sanford I, author
John Wiley & Sons, 1984
Buku Referensi
Leslie D. "Doc" Long, Clifford Gordon, Charles F. Peck, Jack R. Benjamin
McGraw-Hill, 1982
Buku Referensi
Mays, Larry W.
McGraw-Hill, 2000
Buku Referensi
edited by Richard H. Engelmann and William H. Middendorf
Marcel Dekker, 1995
Buku Referensi
editor in chief, Syed A. Nasar
McGraw-Hill, 1987
Buku Referensi