APA (7th ed.) Citation

Lexinton, S. d., Griesser, B., & O'Dwyer, B. W. (1982). Letters from Ireland, 1228-1229. Cistercian Publications.

Chicago Style (17th ed.) Citation

Lexinton, Stephen de, Bruno Griesser, and B. W. O'Dwyer. Letters from Ireland, 1228-1229. Kalamazoo, Mich.: Cistercian Publications, 1982.

MLA (8th ed.) Citation

Lexinton, Stephen de, et al. Letters from Ireland, 1228-1229. Cistercian Publications, 1982.