Cita APA (7a ed.)

Nagle, G., & Spencer, K. (2001). Geography through diagrams: AS & A Level (3. ed.). Oxford Univ. Press.

Cita Chicago Style (17a ed.)

Nagle, Garrett, y Kris Spencer. Geography Through Diagrams: AS & A Level. 3. ed. Oxford: Oxford Univ. Press, 2001.

Cita MLA (9a ed.)

Nagle, Garrett, y Kris Spencer. Geography Through Diagrams: AS & A Level. 3. ed. Oxford Univ. Press, 2001.