Tsuma, V. T. (1995). Clinical and endocrine studies in primiparous sows: Effects of weaning during lactation and of group housing and fasting during early pregnancy. Dept. of Obstetrics and Gynaecology, Faculty of Veterinary Medicine, Swedish University of Agricultural Sciences.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Tsuma, Victor T. Clinical and Endocrine Studies in Primiparous Sows: Effects of Weaning During Lactation and of Group Housing and Fasting During Early Pregnancy. Uppsala, Sweden: Dept. of Obstetrics and Gynaecology, Faculty of Veterinary Medicine, Swedish University of Agricultural Sciences, 1995.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Tsuma, Victor T. Clinical and Endocrine Studies in Primiparous Sows: Effects of Weaning During Lactation and of Group Housing and Fasting During Early Pregnancy. Dept. of Obstetrics and Gynaecology, Faculty of Veterinary Medicine, Swedish University of Agricultural Sciences, 1995.