Donald L Buth, Frank n Dickinson, & Richard C Foley. (1972). Dairy cattle: Principles practices, problems, profits. Lea & Febiger.
استشهاد بنمط شيكاغوDonald L Buth, Frank n Dickinson, و Richard C Foley. Dairy Cattle: Principles Practices, Problems, Profits. Lea & Febiger, 1972.
MLA استشهادDonald L Buth, et al. Dairy Cattle: Principles Practices, Problems, Profits. Lea & Febiger, 1972.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.