Cita APA (7a ed.)

Mercer, D., & Paxman, J. (2000). 20th Century day by day. Dorling Kindersley.

Cita Chicago Style (17a ed.)

Mercer, Derrik, y Jeremy Paxman. 20th Century Day by Day. London: Dorling Kindersley, 2000.

Cita MLA (9a ed.)

Mercer, Derrik, y Jeremy Paxman. 20th Century Day by Day. Dorling Kindersley, 2000.