APA način citiranja (7. izdanje)

Von Hagen, V. W. (1949). Ecuador and the Galápagos Islands (First edition.). University of Oklahoma Press.

Čikaški stil citiranja (17. izdanje)

Von Hagen, Víctor Wolfgang. Ecuador and the Galápagos Islands. First edition. Norman: University of Oklahoma Press, 1949.

MLA način citiranja (8. izdanje)

Von Hagen, Víctor Wolfgang. Ecuador and the Galápagos Islands. First edition. University of Oklahoma Press, 1949.