Olde English Babydoll Southdown Sheep Association of Australia Inc.
Southdown Breeders Association. “The Southdown: The Supreme Prime Lamb Sire”. 1962 (available from the National Library of Australia via interlibrary loan)
North American Babydoll Southdown Sheep Association and Registry (NABSSAR)
Old English Babydoll Southdown Sheep Registry (OEBSSR)
The Southdown Sheep by Valerie Porter