Marshaling social support: Formats, Processes and effects / Edited Benjamin H. Gottlieb
Sage Publications, 1988
 Buku Teks
Crawford, Bartholow V.
American literature / by Bartholow V. Crawford, Alexander C. Kern, and Morriss H. Needleman
Barnes & Noble, 1953
 Buku Teks
Inequality: causes and consequences
edited by Lorenzo Cappellari, Solomon W. Polachek; Konstantinos Tatsiramos
Emerald, 2016
 eBooks
Ourselves and the pacific / edited by R.M. Crawford
edited by R.M. Crawford
Melbourne University Press, 1941
 Buku Teks
Rose-Ackerman, Susan
Corruption and government: causes, consequences, and reform
Cambridge University Press , 1999
 Buku Teks