Citazione Stile APA (7a Edizione)

Beier, G. (1975). The task ahead for the cities of the developing countries. World Bank.

Citazione stile Chigago Style (17a edizione)

Beier, George. The Task Ahead for the Cities of the Developing Countries. Washington: World Bank, 1975.

Citatione MLA (9a ed.)

Beier, George. The Task Ahead for the Cities of the Developing Countries. World Bank, 1975.