Gaya APA

PHD, L, M, S, ,, J., Spencer, S, M. (1993). COMPETENCE AT WORK . Canada: John Wiley & Sons,Inc..

Gaya MLA

PHD, Lyle, M., Spencer, ,, JR.,., Spencer, Signe, M.. "COMPETENCE AT WORK". Canada: John Wiley & Sons,Inc., 1993. Buku.