APA-ийн эшлэл(7 дахь хэвлэлт)

(1893). West Virgnia Agricultural Experiment Station: научное издание. Special Bulletin No 30 : Address and notes on sheep. (By A. D. Hopkins).

Чикаго-гийн эшлэл (17 дахь хэвлэлт)

West Virgnia Agricultural Experiment Station: научное издание. Special Bulletin No 30 : Address and Notes on Sheep. (By A. D. Hopkins). 1893.

MLA -ийн эшлэл (9 дэх хэвлэлт)

West Virgnia Agricultural Experiment Station: научное издание. Special Bulletin No 30 : Address and Notes on Sheep. (By A. D. Hopkins). 1893.