APA (7th ed.) Citation

Barker, J. (2006). Modern Skepticism: A Journey Through the Land of Doubt and Back Again A Life Story. Project Gutenberg.

Chicago Style (17th ed.) Citation

Barker, Joseph. Modern Skepticism: A Journey Through the Land of Doubt and Back Again A Life Story. Project Gutenberg, 2006.

MLA (9th ed.) Citation

Barker, Joseph. Modern Skepticism: A Journey Through the Land of Doubt and Back Again A Life Story. Project Gutenberg, 2006.

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