APA (7th ed.) Citation

Hall Williams, N., Dodson, C., & Davies, I. R. (1985). O' n cwmpas. Gomer.

Chicago Style (17th ed.) Citation

Hall Williams, Nia, Carl Dodson, and I. Rh Davies. O' N Cwmpas. [Llandysul]: Gomer, 1985.

MLA (9th ed.) Citation

Hall Williams, Nia, et al. O' N Cwmpas. Gomer, 1985.