APA
Harper S., Whisler T. L., . (1962). Performance appraisal: Research and practice. New York: Holt Rinehart.
Chicago
Harper Shirley, Whisler Thomas L, . 1962. Performance appraisal: Research and practice. New York: Holt Rinehart.
Harvard
Harper S., Whisler T. L., . (1962). Performance appraisal: Research and practice. New York: Holt Rinehart.
MLA
Harper Shirley, Whisler Thomas L, . Performance appraisal: Research and practice. New York: Holt Rinehart. 1962.
