APA (7th ed.) Citation

Keller, C. (1966). Die Chemie des Protactiniums.

Chicago Style (17th ed.) Citation

Keller, C. Die Chemie Des Protactiniums. Karlsruhe, 1966.

MLA (9th ed.) Citation

Keller, C. Die Chemie Des Protactiniums. 1966.

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