American Hampshire Sheep Association. (1937). Flock record, Hampshire sheep. American Hampshire Sheep Association.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रAmerican Hampshire Sheep Association. Flock Record, Hampshire Sheep. Detroit, Mich.: American Hampshire Sheep Association, 1937.
एमएलए (8वां संस्करण) प्रशस्ति पत्रAmerican Hampshire Sheep Association. Flock Record, Hampshire Sheep. American Hampshire Sheep Association, 1937.
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