APA (7th ed.) Citation

Heyward, D. (1988). Porgy und Bess: Roman. Kiepenheuer & Witsch.

Chicago Style (17th ed.) Citation

Heyward, DuBose. Porgy Und Bess: Roman. Köln: Kiepenheuer & Witsch, 1988.

MLA (9th ed.) Citation

Heyward, DuBose. Porgy Und Bess: Roman. Kiepenheuer & Witsch, 1988.

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