APA (7th ed.) Citation

Roosevelt, W., & Mencl, R. (2010). Frontier Boys in the South Seas. Project Gutenberg.

Chicago Style (17th ed.) Citation

Roosevelt, Wyn, and Rudolf Mencl. Frontier Boys in the South Seas. Project Gutenberg, 2010.

MLA (9th ed.) Citation

Roosevelt, Wyn, and Rudolf Mencl. Frontier Boys in the South Seas. Project Gutenberg, 2010.

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