APA (7th ed.) Citation

Plummer, J. P., & Mabry, J. R. (2006). Who are the Independent Catholics?: An introduction to the Independent and old Catholic churches. Apocryphile Press.

Chicago Style (17th ed.) Citation

Plummer, John Paul, and John R. Mabry. Who Are the Independent Catholics?: An Introduction to the Independent and Old Catholic Churches. Berkeley, CA: Apocryphile Press, 2006.

MLA (9th ed.) Citation

Plummer, John Paul, and John R. Mabry. Who Are the Independent Catholics?: An Introduction to the Independent and Old Catholic Churches. Apocryphile Press, 2006.

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