Greene, Mark R.
Personal financial management/Mark R. Greene, Robert R. Dince
South-Western Publishing CO., 1983
 Buku Teks
The Heart, arteries, and veins/editors, Robert C. Schlant, R. Wayne Alexander; associate editors, Robert A. O'Rourke, Roberts, Edmond H. Sonnenblick
McGraw-Hill, 1994
 Buku Teks
Rowe, R. Kerry
Clavey barrier systems for waste disposal facilities / R. Kerry Rowe, Robert M. Quigley, and John R. Booker
E & FN Spon, 1995
 Buku Teks
Crawford, R.M.
Australia / R,M. Crawford
Hutchinson University Library, 1963
 Buku Teks
Jones, Gareth R.
Essentials of contemporary management / Gareth R. Jones, Jennifer M. George
McGraw-Hill, 2007
 Buku Teks