Higgins, G. (2010). Brian Friel. Northcote House.
Tohutoru Kātū Chicago (17th ed.)Higgins, Geraldine. Brian Friel. Tavistock: Northcote House, 2010.
Tohutoro MLA (9th ed.)Higgins, Geraldine. Brian Friel. Northcote House, 2010.
Kia tūpato: Kāore pea ēnei kupu hautoa i te ōrite pū 100%.