Ballast, David Kent, author
McGraw-Hill, 1994
Buku Referensi
Ballast, David Kent, author
McGraw-Hill, 1994
Buku Referensi
Ballast, David Kent, author
Professional Publications, 2002
Buku Teks
edited by Edwin H. Gaylord, Charles N. Gaylord
McGraw-Hill, 1968
Buku Referensi
edited by Edwin H. Gaylord, Charles N. Gayrold
McGraw-Hill, 1979
Buku Referensi