APA (7th ed.) Citation

John, t. A. (2007). The First Epistle of John. Project Gutenberg.

Chicago Style (17th ed.) Citation

John, the Apostle. The First Epistle of John. Project Gutenberg, 2007.

MLA (9th ed.) Citation

John, the Apostle. The First Epistle of John. Project Gutenberg, 2007.

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