Cita APA (7a ed.)

Conference. East-central and Southeast European geography, Conference. Eastern Europe, & Hoffman, G. W. (1971). Eastern Europe: Essays in geographical problems. Methuen.

Cita Chicago Style (17a ed.)

Conference. East-central and Southeast European geography, Conference. Eastern Europe, y George W. Hoffman. Eastern Europe: Essays in Geographical Problems. London: Methuen, 1971.

Cita MLA (9a ed.)

Conference. East-central and Southeast European geography, et al. Eastern Europe: Essays in Geographical Problems. Methuen, 1971.