APA (7th ed.) Citation

Gieseler, J. C. L., Davidson, S., & Smith, H. B. A text-book of church history (New American ed.). Harper & brothers.

Chicago Style (17th ed.) Citation

Gieseler, Johann Carl Ludwig, Samuel Davidson, and Henry Boynton Smith. A Text-book of Church History. New American ed. New York: Harper & brothers.

MLA (9th ed.) Citation

Gieseler, Johann Carl Ludwig, et al. A Text-book of Church History. New American ed. Harper & brothers.

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