Duchens, M. (1995). Influence of suprabasal progesterone on preovulatory follicle development in heifers: Clinical, endocrinological and morphological studies. Dept. of Obstetrics and Gynaecology, Faculty of Veterinary Medicine, Swedish University of Agricultural Sciences.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Duchens, Mario. Influence of Suprabasal Progesterone on Preovulatory Follicle Development in Heifers: Clinical, Endocrinological and Morphological Studies. Uppsala: Dept. of Obstetrics and Gynaecology, Faculty of Veterinary Medicine, Swedish University of Agricultural Sciences, 1995.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Duchens, Mario. Influence of Suprabasal Progesterone on Preovulatory Follicle Development in Heifers: Clinical, Endocrinological and Morphological Studies. Dept. of Obstetrics and Gynaecology, Faculty of Veterinary Medicine, Swedish University of Agricultural Sciences, 1995.