(2008). Bulletin of the University of Agricultural sciences and veterinary medicine Cluj-Napoca: Volume 65, Veterinary medicine. 2.
Tohutoru Kātū Chicago (17th ed.)Bulletin of the University of Agricultural Sciences and Veterinary Medicine Cluj-Napoca: Volume 65, Veterinary Medicine. 2. 2008.
Tohutoro MLA (9th ed.)Bulletin of the University of Agricultural Sciences and Veterinary Medicine Cluj-Napoca: Volume 65, Veterinary Medicine. 2. 2008.
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