Donald Lay J R, Ebehard Von Borell, & Solon A Ewing. (1999). Farm Animal Well-Being Stress Physiology, animal behavior, and environmental design (1.). New Jersey.
استشهاد بنمط شيكاغوDonald Lay J R, Ebehard Von Borell, و Solon A Ewing. Farm Animal Well-Being Stress Physiology, Animal Behavior, and Environmental Design. 1. New Jersey, 1999.
MLA استشهادDonald Lay J R, et al. Farm Animal Well-Being Stress Physiology, Animal Behavior, and Environmental Design. 1. New Jersey, 1999.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.