V Palya. (1991). FAO animal production and health paper N.89: Manual for the production of Marek's disease, Gumboro disease and inactivated Newcastle disease vaccines. Rome: FAO.
Παραπομπή Chicago StyleV Palya. FAO Animal Production and Health Paper N.89: Manual for the Production of Marek's Disease, Gumboro Disease and Inactivated Newcastle Disease Vaccines. Rome: FAO, 1991.
Παραπομπή MLAV Palya. FAO Animal Production and Health Paper N.89: Manual for the Production of Marek's Disease, Gumboro Disease and Inactivated Newcastle Disease Vaccines. Rome: FAO, 1991.
Πρόσοχή: Οι παραπομπές μπορεί να μην είναι 100% ακριβείς.