Gates, B. (1995). The road ahead. Penguin.
Cita Chicago (17th ed.)Gates, Bill. The Road Ahead. London: Penguin, 1995.
Cita MLA (9th ed.)Gates, Bill. The Road Ahead. Penguin, 1995.
Atenció: Aquestes cites poden no estar 100% correctes.
Cita APA (7th ed.)