APA (7th ed.) Citation

Heer, O. (1869). Die miocene Flora von Spitzbergen.

Chicago Style (17th ed.) Citation

Heer, Oswald. Die Miocene Flora Von Spitzbergen. Solothurn, 1869.

MLA (9th ed.) Citation

Heer, Oswald. Die Miocene Flora Von Spitzbergen. 1869.

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