APA (7th ed.) Citation

Amundsen, R. Plan einer neuen Nordpolar-Expedition.

Chicago Style (17th ed.) Citation

Amundsen, Roald. Plan Einer Neuen Nordpolar-Expedition.

MLA (9th ed.) Citation

Amundsen, Roald. Plan Einer Neuen Nordpolar-Expedition.

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