APA (7th ed.) Citation

Henkels, W. (1963). 99 Bonner Köpfe. Econ-Verl.

Chicago Style (17th ed.) Citation

Henkels, Walter. 99 Bonner Köpfe. Düsseldorf [u.a.]: Econ-Verl, 1963.

MLA (8th ed.) Citation

Henkels, Walter. 99 Bonner Köpfe. Econ-Verl, 1963.

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