Cita APA (7a ed.)

Aylett, J. F., & Page, P. (1986). The twentieth century (1. publ.). Hodder & Stoughton.

Cita Chicago Style (17a ed.)

Aylett, John F., y Philip Page. The Twentieth Century. 1. publ. London: Hodder & Stoughton, 1986.

Cita MLA (9a ed.)

Aylett, John F., y Philip Page. The Twentieth Century. 1. publ. Hodder & Stoughton, 1986.