APA Citation

Evans, H. M., Thomas, W. O., & Williams, S. J. (1987). Y geiriadur mawr ([4. Aufl.].). Gomer, Davies.

MLA Citation

Evans, Harald Meurig, William Owen Thomas, and Stephen J. Williams. Y Geiriadur Mawr. [4. Aufl.]. Gomer, Davies, 1987.

Warning: These citations may not always be 100% accurate.