APA (7th ed.) Citation

Barrett, R. E. (2011). Treading the Narrow Way. Project Gutenberg.

Chicago Style (17th ed.) Citation

Barrett, R. E. Treading the Narrow Way. Project Gutenberg, 2011.

MLA (9th ed.) Citation

Barrett, R. E. Treading the Narrow Way. Project Gutenberg, 2011.

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