APA (7th ed.) Citation

Knuth, E. (1943). Ernst Zeuthen 1880 - 1938. Zeuthen.

Chicago Style (17th ed.) Citation

Knuth, Eigil. Ernst Zeuthen 1880 - 1938. Gentofte: Zeuthen, 1943.

MLA (9th ed.) Citation

Knuth, Eigil. Ernst Zeuthen 1880 - 1938. Zeuthen, 1943.

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