Addaswyd o'r ail arg. o'r Saesneg gwreiddiol = Adapted from 2nd ed. of English original: London: Hutchinson, [19--].
Yn cynnwys mynegai = Includes index.
Cyfieithydd = Translator: Huw Roberts.
Cadw defaid : canllawiau ymarferol ar gyfer ffermwyr a myfyrwyr by Derek H. Goodwin. ISBN 1871913373. Published by Canolfan Astudiaethau Iaith in 1991. Publication and catalogue information, links to buy online and reader comments.