(1) Knouse, Stephen B. 1983. The Letter of Recommendation: Specificity and Favorability of Information [1], in Personnel Psychology. 36, 331-341. [1]
(2) Kasambria, K. Paul. 1984. "Recommendation Inflation," in Teacher Educator, 20(2), 26-29. [2]
(3) Graham, Fan Chung. “Policy for Writing Recommendation Letters for Undergraduate Students. Formerly available at http://math.ucsd.edu [3]. accessed May 18, 2010.
Links
[1] http://www.researchgate.net/publication/227889792_The_letter_of_recommendation_Specificity_and_favorability_of_information
[2] http://eric.ed.gov/?id=EJ310722
[3] http://math.ucsd.edu
[4] http://www.jstor.org/stable/40225085?seq=1#page_scan_tab_contents
[5] http://www.researchgate.net/publication/2518065_Employment_References_Who_Are_We_Talking_About
[6] http://www.questia.com/library/journal/1G1-13689978/predicting-performance-with-letters-of-recommendation
[7] http://psycnet.apa.org/journals/apl/66/3/296/
[8] http://link.springer.com/article/10.1023/A%3A1022962814637?no-access=true