APA (7th ed.) Citation

Langhorne, J. Letters on religious retirement, melancholy, and enthusiasm.

Chicago Style (17th ed.) Citation

Langhorne, John. Letters on Religious Retirement, Melancholy, and Enthusiasm.

MLA (9th ed.) Citation

Langhorne, John. Letters on Religious Retirement, Melancholy, and Enthusiasm.

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