Παραπομπή σε μορφή APA (7η εκδ.)

Perrings, C. (1979). Black mineworkers in central Africa: Industrial strategies and the evolution of an African prolerariat in the copperbelt, 1911-41. Africana Pub. Co.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Perrings, Charles. Black Mineworkers in Central Africa: Industrial Strategies and the Evolution of an African Prolerariat in the Copperbelt, 1911-41. New York: Africana Pub. Co, 1979.

Παραπομπή σε μορφή MLA (9th εκδ.)

Perrings, Charles. Black Mineworkers in Central Africa: Industrial Strategies and the Evolution of an African Prolerariat in the Copperbelt, 1911-41. Africana Pub. Co, 1979.