DERRICK, J. (1975). Africa’s slaves today. Allen and Unwin.
Lua i Stíl Chicago (17ú heag.)DERRICK, Jonathan. Africa’s Slaves Today. Allen and Unwin, 1975.
Lua MLA (9ú heag.)DERRICK, Jonathan. Africa’s Slaves Today. Allen and Unwin, 1975.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.