Chang, R. (1998). Imprpving through bench marking. Wheeler.
Lua i Stíl Chicago (17ú heag.)Chang, Richard. Imprpving Through Bench Marking. New Delhi: Wheeler, 1998.
Lua MLA (9ú heag.)Chang, Richard. Imprpving Through Bench Marking. Wheeler, 1998.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.