Παραπομπή σε μορφή APA (7η εκδ.)

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

Παραπομπή σε μορφή Chicago (17η εκδ.)

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

Παραπομπή σε μορφή MLA (9th εκδ.)

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