APA (7th ed.) Citation

Betzler, H., Munzig, H., & Schünemann, P. (1961). Ireland. Hill and Wang.

Chicago Style (17th ed.) Citation

Betzler, Hannes, Horst Munzig, and Peter Schünemann. Ireland. New York: Hill and Wang, 1961.

MLA (9th ed.) Citation

Betzler, Hannes, et al. Ireland. Hill and Wang, 1961.