Chang, R. (1998). Imprpving through bench marking. Wheeler.
Cita Chicago (17th ed.)Chang, Richard. Imprpving Through Bench Marking. New Delhi: Wheeler, 1998.
Cita MLA (9th ed.)Chang, Richard. Imprpving Through Bench Marking. Wheeler, 1998.
Atenció: Aquestes cites poden no estar 100% correctes.