APA (7th ed.) Citation

Allen, W. B. (2013). Gulf and Glacier or The Percivals in Alaska. Project Gutenberg.

Chicago Style (17th ed.) Citation

Allen, Willis Boyd. Gulf and Glacier or The Percivals in Alaska. Project Gutenberg, 2013.

MLA (9th ed.) Citation

Allen, Willis Boyd. Gulf and Glacier or The Percivals in Alaska. Project Gutenberg, 2013.

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