Cita APA (7a ed.)

Price, S. (1965). A world of difference. Penguin Books.

Cita Chicago Style (17a ed.)

Price, Stnley. A World of Difference. Middlesex: Penguin Books, 1965.

Cita MLA (8a ed.)

Price, Stnley. A World of Difference. Penguin Books, 1965.