Cita APA (7a ed.)

Speak, C. M., & Reed, A. C. J. (1975). North America and Europe (Revised ed.). Oxford Univ. Press.

Cita Chicago Style (17a ed.)

Speak, Christine Margaret, y Andrew Christopher Julian Reed. North America and Europe. Revised ed. Hong Kong: Oxford Univ. Press, 1975.

Cita MLA (9a ed.)

Speak, Christine Margaret, y Andrew Christopher Julian Reed. North America and Europe. Revised ed. Oxford Univ. Press, 1975.