Cita APA (7a ed.)

Donaldson, P. (1986). Worlds apart: : the economic gulf between nations (2a. ed.). Penguin.

Cita Chicago Style (17a ed.)

Donaldson, Peter. Worlds Apart: : The Economic Gulf Between Nations. 2a. ed. Harmondsworth: Penguin, 1986.

Cita MLA (9a ed.)

Donaldson, Peter. Worlds Apart: : The Economic Gulf Between Nations. 2a. ed. Penguin, 1986.