APA (7th ed.) Citation

Franziskus Papst, Spadaro, A., & Fares, D. (2020). Letters of tribulation (English edition.). Orbis Books.

Chicago Style (17th ed.) Citation

Franziskus Papst, Antonio Spadaro, and Diego Fares. Letters of Tribulation. English edition. Maryknoll, NY: Orbis Books, 2020.

MLA (9th ed.) Citation

Franziskus Papst, et al. Letters of Tribulation. English edition. Orbis Books, 2020.