Kaeckenbeeck, G. (1920). International rivers. H.M. Stationery Office.
Cita Chicago Style (17a ed.)Kaeckenbeeck, Georges. International Rivers. London: H.M. Stationery Office, 1920.
Cita MLA (9a ed.)Kaeckenbeeck, Georges. International Rivers. H.M. Stationery Office, 1920.
Precaución: Estas citas no son 100% exactas.