APA (7th ed.) Citation

Isidore, o. S., Ford, G. B., & Arévalo, F. (1970). The letters of St. Isidore of Seville (2d rev. ed.). A.M. Hakkert.

Chicago Style (17th ed.) Citation

Isidore, of Seville, Gordon B. Ford, and Faustino Arévalo. The Letters of St. Isidore of Seville. 2d rev. ed. Amsterdam: A.M. Hakkert, 1970.

MLA (9th ed.) Citation

Isidore, of Seville, et al. The Letters of St. Isidore of Seville. 2d rev. ed. A.M. Hakkert, 1970.