Gerhard, J., Hohle, E. M., & Melvin, R. (2015). Schola pietatis = The practice of Godliness. Schola pietatis = The practice of Godliness.
Citazione stile Chigago Style (17a edizione)Gerhard, Johann, Elmer M. Hohle, e Rachel Melvin. "Schola Pietatis = The Practice of Godliness." Schola Pietatis = The Practice of Godliness 2015.
Citatione MLA (9a ed.)Gerhard, Johann, et al. "Schola Pietatis = The Practice of Godliness." Schola Pietatis = The Practice of Godliness, 2015.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.
