APA (7th ed.) Citation

Jacks, L. P. (2010). Religious Perplexities. Project Gutenberg.

Chicago Style (17th ed.) Citation

Jacks, L. P. Religious Perplexities. Project Gutenberg, 2010.

MLA (9th ed.) Citation

Jacks, L. P. Religious Perplexities. Project Gutenberg, 2010.

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