APA (7th ed.) Citation

Spencer, L. M. (1993). Competence at work: Models for superior performance. John Wiley.

Chicago Style (17th ed.) Citation

Spencer, Lyle M. Competence at Work: Models for Superior Performance. N.Y: John Wiley, 1993.

MLA (8th ed.) Citation

Spencer, Lyle M. Competence at Work: Models for Superior Performance. John Wiley, 1993.