Koch, R., & Gatzweiler, H. P. (1980). Migration and settlement. International Institute for Applied Systems Analysis.
Citazione stile Chigago Style (17a edizione)Koch, Reinhold, e Hans Peter Gatzweiler. Migration and Settlement. Laxenburg: International Institute for Applied Systems Analysis, 1980.
Citatione MLA (9a ed.)Koch, Reinhold, e Hans Peter Gatzweiler. Migration and Settlement. International Institute for Applied Systems Analysis, 1980.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.