Παραπομπή APA

Skeet, I. (1988). Opec: Twenty-five years of prices and politics. Cambridge University Press.

Παραπομπή Chicago Style

Skeet, Ian. Opec: Twenty-five Years of Prices and Politics. Cambridge: Cambridge University Press, 1988.

Παραπομπή MLA

Skeet, Ian. Opec: Twenty-five Years of Prices and Politics. Cambridge University Press, 1988.