APA (7th ed.) Citation

Freytag, H. (1966). Dunkelkammer-Praxis.

Chicago Style (17th ed.) Citation

Freytag, Heinrich. Dunkelkammer-Praxis. 1966.

MLA (9th ed.) Citation

Freytag, Heinrich. Dunkelkammer-Praxis. 1966.

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