APA (7th ed.) Citation

Bohren, R. (1967). Bohrungen. Hammer.

Chicago Style (17th ed.) Citation

Bohren, Rudolf. Bohrungen. Wuppertal: Hammer, 1967.

MLA (9th ed.) Citation

Bohren, Rudolf. Bohrungen. Hammer, 1967.

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