APA (7th ed.) Citation

Orme, A. R., Butlin, R. A., & Fahy, G. (1969). A regional geography of Ireland. Browne and Nolan.

Chicago Style (17th ed.) Citation

Orme, A. R., R. A. Butlin, and Gerard Fahy. A Regional Geography of Ireland. Dublin: Browne and Nolan, 1969.

MLA (9th ed.) Citation

Orme, A. R., et al. A Regional Geography of Ireland. Browne and Nolan, 1969.