Cita APA

Calvocoressi, P. (1977). World polities since. (3rd ed.). Longman.

Chicago Edition Citation

Calvocoressi, Peter. World Polities Since. 3rd ed. London: Longman, 1977.

Cita MLA

Calvocoressi, Peter. World Polities Since. 3rd ed. Longman, 1977.