APA (7th ed.) Citation

Kleukens, C. H. (1940). Die Kunst der Letter. Insel-Verlag.

Chicago Style (17th ed.) Citation

Kleukens, Christian Heinrich. Die Kunst Der Letter. Leipzig: Insel-Verlag, 1940.

MLA (8th ed.) Citation

Kleukens, Christian Heinrich. Die Kunst Der Letter. Insel-Verlag, 1940.

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