APA (7th ed.) Citation

Comenius, J. A., Hoole, C., & Bardeen, C. W. (2009). The Orbis Pictus. Project Gutenberg.

Chicago Style (17th ed.) Citation

Comenius, Johann Amos, Charles Hoole, and C. W. Bardeen. The Orbis Pictus. Project Gutenberg, 2009.

MLA (9th ed.) Citation

Comenius, Johann Amos, et al. The Orbis Pictus. Project Gutenberg, 2009.

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