Cita APA (7a ed.)
Robinson, C. (1991). Themes for Proficiency: With key (8.impession.). The University Press.
Cita Chicago Style (17a ed.)
Robinson, Carole. Themes for Proficiency: With Key. 8.impession. Oxford: The University Press, 1991.
Cita MLA (9a ed.)
Robinson, Carole. Themes for Proficiency: With Key. 8.impession. The University Press, 1991.
Precaución: Estas citas no son 100% exactas.