APA (7th ed.) Citation

Billing, H., & Martin, K. (1930). Hermann Billing. Hübsch.

Chicago Style (17th ed.) Citation

Billing, Hermann, and Kurt Martin. Hermann Billing. Berlin: Hübsch, 1930.

MLA (9th ed.) Citation

Billing, Hermann, and Kurt Martin. Hermann Billing. Hübsch, 1930.

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