APA (7th ed.) Citation

Lehmann, R., & Lehmann, W. P. (1975). An introduction to Old Irish. Modern Language Assoc. of America.

Chicago Style (17th ed.) Citation

Lehmann, Ruth, and Winfred P. Lehmann. An Introduction to Old Irish. New York, NY: Modern Language Assoc. of America, 1975.

MLA (9th ed.) Citation

Lehmann, Ruth, and Winfred P. Lehmann. An Introduction to Old Irish. Modern Language Assoc. of America, 1975.