APA (7th ed.) Citation

Drummond, H. (2007). Natural Law in the Spiritual World. Project Gutenberg.

Chicago Style (17th ed.) Citation

Drummond, Henry. Natural Law in the Spiritual World. Project Gutenberg, 2007.

MLA (9th ed.) Citation

Drummond, Henry. Natural Law in the Spiritual World. Project Gutenberg, 2007.

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