APA (7th ed.) Citation

Muir, P. M. (2010). Modern Substitutes for Christianity. Project Gutenberg.

Chicago Style (17th ed.) Citation

Muir, Pearson M'Adam. Modern Substitutes for Christianity. Project Gutenberg, 2010.

MLA (9th ed.) Citation

Muir, Pearson M'Adam. Modern Substitutes for Christianity. Project Gutenberg, 2010.

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