Citazione Stile APA (7a Edizione)

BARRATT, J. (1972). International aspects of overpopulation: Proceedings of a conference held by the. Macmillan.

Citazione stile Chigago Style (17a edizione)

BARRATT, Jhon. International Aspects of Overpopulation: Proceedings of a Conference Held by the. London: Macmillan, 1972.

Citatione MLA (9a ed.)

BARRATT, Jhon. International Aspects of Overpopulation: Proceedings of a Conference Held by the. Macmillan, 1972.