Gaya APA

Spencer, L, M., Spencer, S, M. (1993). Competence at work : models for superior performance . New York: John Wiley & Sons.

Gaya MLA

Spencer, Lyle, M., Spencer, Signe, M.. "Competence at work : models for superior performance". New York: John Wiley & Sons, 1993. Buku/Printed Material.