Rujukan[sunting | sunting sumber]
- Morris, Desmond (2008). "Feral dogs". Dogs: The Ultimate Dictionary of over 1,000 Dog Breeds (ed. First Paperback). Vermont: Tralfalgar Square. m/s. 696–697. ISBN 978-1-57076-410-3.
The mongrel is not a true breed, but it is certainly a common category of domestic dog. It has been estimated that, worldwide, there are 150 million of them."