Cita APA

Bethell, N. (1972). Gomulka: His Poland and his communism. Penguin.

Citación estilo Chicago

Bethell, Nicholas. Gomulka: His Poland and His Communism. Harmondsworth: Penguin, 1972.

Cita MLA

Bethell, Nicholas. Gomulka: His Poland and His Communism. Penguin, 1972.