APA (7th ed.) Citation

Heintz, W. D. (1971). Doppelsterne.

Chicago Style (17th ed.) Citation

Heintz, Wulff D. Doppelsterne. 1971.

MLA (9th ed.) Citation

Heintz, Wulff D. Doppelsterne. 1971.

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