Leopold, V., English, P., L., M., H., Z., A., I., P.(1991).Metabolic disorders and their prevention in farm animals / editor, Leopold Vrzgula .New York:.
Gaya MLA
Vrzgula, Leopold., English, Poruchy, Latkoveho, Metabolizm, Hospodarskych, Zvierat, At, Ich, Prevencia."Metabolic disorders and their prevention in farm animals / editor, Leopold Vrzgula".New York:,1991.Textbook.