Harker, Ralph J.
Generalized methods of vibration analysis / Ralph J. Harker
John Wiley & Sons, 1983
 Buku Teks
Reed, Mortimer P.
Complete guide to residential remodeling / Mortimer P. Reed
Prentice-Hall, 1983
 Buku Teks
Davis, Sid
Your eco-friendly home: buying, building, or remodeling green
American Management Association, 2008
 eBooks
Cordiner, Ralph J.
New frontiers for professional managers / Ralph J. Cordiner
McGraw-Hill Book Company, Inc., 1956
 Buku Teks
Davis, Sid
A survival guide for selling a home
[American Management Association, ], 2005
 eBooks