APA (7th ed.) Citation

Lewy, G. (1999). Gypsies and Jews under the Nazis. Holocaust and genocide studies.

Chicago Style (17th ed.) Citation

Lewy, Guenter. "Gypsies and Jews Under the Nazis." Holocaust and Genocide Studies 1999.

MLA (8th ed.) Citation

Lewy, Guenter. "Gypsies and Jews Under the Nazis." Holocaust and Genocide Studies, 1999.

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