Cita APA (7a ed.)

Koch, R., & Gatzweiler, H. P. (1980). Migration and settlement. International Institute for Applied Systems Analysis.

Cita Chicago Style (17a ed.)

Koch, Reinhold, y Hans Peter Gatzweiler. Migration and Settlement. Laxenburg: International Institute for Applied Systems Analysis, 1980.

Cita MLA (9a ed.)

Koch, Reinhold, y Hans Peter Gatzweiler. Migration and Settlement. International Institute for Applied Systems Analysis, 1980.