Ballast, David Kent
McGraw-Hill, 1994
Buku Referensi
edited by Keith F. Faherty, Thomas G. Williamson
McGraw-Hill, 1995
Buku Referensi
edited by Gajanan M. Sabnis
Van Nostrand Reinhold, 1979
Buku Referensi
edited by Keith F. Faherty, Thomas G. Williamson
McGraw-Hill, 1997
Buku Referensi
Reiner, Laurence E.
Prentice-Hall, 1972
Buku Referensi