APA (7th ed.) Citation

Christian, V. (1961). Die Herkunft der Sumerer.

Chicago Style (17th ed.) Citation

Christian, V. Die Herkunft Der Sumerer. Wien, 1961.

MLA (8th ed.) Citation

Christian, V. Die Herkunft Der Sumerer. 1961.

Warning: These citations may not always be 100% accurate.