Gilmer, B. von Haller (Beverly von Haller), 1909-1994
Applied psychology
Tata McGraw-Hill, 1994
 Buku Teks
Encyclopedia of psychology
edited by Raymond J. Corsini
New York : John Wiley & Sons, 1990,
 Buku Referensi
Encyclopedia of psychology
edited by Raymond J. Corsini
New York : John Wiley & sons, 1994,
 Buku Referensi
Encyclopedia of psychology
edited by Raymond J. Corsin
New York : John Wiley & Sons, 1994,
 Buku Referensi
The encyclopedia of applied geology
edited by Charles W. Finkl, Jnr.
Van Nostrand Reinhold, 1984
 Buku Referensi