APA (7th ed.) Citation

Hedin, S. A. (2007). From Pole to Pole A Book for Young People. Project Gutenberg.

Chicago Style (17th ed.) Citation

Hedin, Sven Anders. From Pole to Pole A Book for Young People. Project Gutenberg, 2007.

MLA (9th ed.) Citation

Hedin, Sven Anders. From Pole to Pole A Book for Young People. Project Gutenberg, 2007.

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