Agus Supangat
Pengantar oseanografi / Agus Supangat, Susanna
Pusat Riset Kelautan dan Perikanan, 2004
 Buku Teks
Judgment and decision-making research in accounting and auditing / Edited by Robert H. Ashton and Alison Hubbard Ashton
Cambridge University Press , 1995
 Buku Teks
Ashton, Robert
The English civil war : conservatism and revolution, 1603-1649 / Robert Ashton
Weidenfeld and Nicolson, 1979
 Buku Teks
Ashton, Beryl G.
The principles of modern biology genes, chromosomes and evolution/Beryl Ashton
Houghton Mifflin, 1967
 Buku Teks
Some early contributions to the study of audit judgment / edited by Robert H. Ashton
Garland Publishing, Inc., 1984
 Buku Teks