N Ashok & S Rajathi. (2005). Post-hatch development of preen gland in the duck ( Anas platyrhynchos ) (MVSC.). College of veterinery and animal science.
استشهاد بنمط شيكاغوN Ashok و S Rajathi. Post-hatch Development of Preen Gland in the Duck ( Anas Platyrhynchos ). MVSC. College of veterinery and animal science, 2005.
MLA استشهادN Ashok و S Rajathi. Post-hatch Development of Preen Gland in the Duck ( Anas Platyrhynchos ). MVSC. College of veterinery and animal science, 2005.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.