APA (7th ed.) Citation

Lehmann, K., & Ring, W. (1899). Das Handelsgesetzbuch. Heymann.

Chicago Style (17th ed.) Citation

Lehmann, Karl, and W. Ring. Das Handelsgesetzbuch. Berlin: Heymann, 1899.

MLA (9th ed.) Citation

Lehmann, Karl, and W. Ring. Das Handelsgesetzbuch. Heymann, 1899.

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