Gaya APA

Spencer, L, M. (1993). Competence Work : Models For Superior Performance (Cet. 1). New York: John Wiley & Sons, Inc.

Gaya MLA

Spencer, Lyle, M.. "Competence Work : Models For Superior Performance". Cet. 1 New York: John Wiley & Sons, Inc, 1993. FKIP-Geografi.