APA (7th ed.) Citation

Walsh, E., Hansard, G., & Irglová, M. (2012). Once (First Edition.). Theatre Communications Group.

Chicago Style (17th ed.) Citation

Walsh, Enda, Glen Hansard, and Markéta Irglová. Once. First Edition. New York: Theatre Communications Group, 2012.

MLA (9th ed.) Citation

Walsh, Enda, et al. Once. First Edition. Theatre Communications Group, 2012.