Cita APA (7th ed.)

GILLEY JERRY W. (1999). PERFORMANCE CHALLENGE. PERSEUS PUBLICATIONS.

Cita Chicago (17th ed.)

GILLEY JERRY W. PERFORMANCE CHALLENGE. MASSACHUSETTS: PERSEUS PUBLICATIONS, 1999.

Cita MLA (9th ed.)

GILLEY JERRY W. PERFORMANCE CHALLENGE. PERSEUS PUBLICATIONS, 1999.