Danell, B. (1987). Oestrous behaviour, ovarian morphology and cyclical variation in follicular system and endocrine pattern in water buffalo heifers. Dept. of Obstetrics and Gynaecology, Faculty of Veterinary Medicine, Swedish University of Agricultural Sciences.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Danell, Börje. Oestrous Behaviour, Ovarian Morphology and Cyclical Variation in Follicular System and Endocrine Pattern in Water Buffalo Heifers. Uppsala: Dept. of Obstetrics and Gynaecology, Faculty of Veterinary Medicine, Swedish University of Agricultural Sciences, 1987.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Danell, Börje. Oestrous Behaviour, Ovarian Morphology and Cyclical Variation in Follicular System and Endocrine Pattern in Water Buffalo Heifers. Dept. of Obstetrics and Gynaecology, Faculty of Veterinary Medicine, Swedish University of Agricultural Sciences, 1987.