Παραπομπή APA

Ezra, D. (1980). Coal and Energy (2nd Ed.). Ernest Benn.

Παραπομπή Chicago Style

Ezra, Derek. Coal and Energy. 2nd Ed. London: Ernest Benn, 1980.

Παραπομπή MLA

Ezra, Derek. Coal and Energy. 2nd Ed. Ernest Benn, 1980.