Citazione Stile APA (7a Edizione)

Spencer, L. M. (1993). Competence at Work (11th.). McGraw-Hill.

Citazione stile Chigago Style (17a edizione)

Spencer, Lyle M. Competence at Work. 11th. Singapore: McGraw-Hill, 1993.

Citatione MLA (9a ed.)

Spencer, Lyle M. Competence at Work. 11th. McGraw-Hill, 1993.