APA-ийн эшлэл(7 дахь хэвлэлт)

Clark, G. A. (1991). Perspectives on the past: Theoretical biases in Mediterranean hunter-gatherer research. University of Pennsylvania Press.

Чикаго-гийн эшлэл (17 дахь хэвлэлт)

Clark, Geoffrey A. Perspectives on the Past: Theoretical Biases in Mediterranean Hunter-gatherer Research. Philadelphia: University of Pennsylvania Press, 1991.

MLA -ийн эшлэл (9 дэх хэвлэлт)

Clark, Geoffrey A. Perspectives on the Past: Theoretical Biases in Mediterranean Hunter-gatherer Research. University of Pennsylvania Press, 1991.