Gaya APA

SPENCER, L, M., SPENCER, S, M. (1993). COMPETENCE AT WORK: Models for Superior Performance . New York: JOHN WILEY & SON.

Gaya MLA

SPENCER, Lyle, M.., SPENCER, Signe, M.. "COMPETENCE AT WORK: Models for Superior Performance". New York: JOHN WILEY & SON, 1993. Text.