Judgment and decision-making research in accounting and auditing / Edited by Robert H. Ashton and Alison Hubbard Ashton
Cambridge University Press , 1995
 Buku Teks SO
Ashton, Robert
The English civil war : conservatism and revolution, 1603-1649 / Robert Ashton
Weidenfeld and Nicolson, 1979
 Buku Teks SO
Parker, Robert H.
The study of benthic communities : a model and a review / Robert H. Parker
Elsevier Scientific Publishing Company, 1975
 Buku Teks
Wiebe, Robert H.
Businessmen and reform a study of the progressive movement / Robert H. Wiebe
Harvart University Press , 1962
 Buku Teks SO
Preventive measures : building risk assessment and crisis early warning systems / edited, John L. Davies and Ted Robert Gurr
Rowman & Littlefield Publishers, Inc., 1998
 Buku Teks SO