Davis, J. B.
Petroleum microbiology / B. J. Davis
Elsevier, 1967
Buku Teks
Harker, Ralph J.
Generalized methods of vibration analysis / Ralph J. Harker
John Wiley & Sons, 1983
Buku Teks
Cordiner, Ralph J.
New frontiers for professional managers / Ralph J. Cordiner
McGraw-Hill Book Company, Inc., 1956
Buku Teks
Davis, Joel, 1950-
Advertising research : theory and practice / Joel J. Davis
Prentice-Hall, 1997
Buku Teks
Davis, Robert J.
Digital and computer projects / Robert J. Davis
Newnes, 1999
Buku Teks