APA (7th ed.) Citation

O'Se, D., & Sheils, J. (1994). Irish: A complete course for beginners. NTC Pub.

Chicago Style (17th ed.) Citation

O'Se, Diarmuid, and Joseph Sheils. Irish: A Complete Course for Beginners. Lincolnwood, Ill: NTC Pub, 1994.

MLA (9th ed.) Citation

O'Se, Diarmuid, and Joseph Sheils. Irish: A Complete Course for Beginners. NTC Pub, 1994.