Manda, Srinivas, Sreenu Makkena, Babu Rao Kakani, Srilatha Chintamaneni, and Subramanyam Naidu Kakarla. 2012. “Diagnostic Applications of Ultrasonography to Testes and Accessory Sex Glands in Ongole (Bos Indicus) Bulls”. Journal of Advanced Veterinary Research 2 (4):239-48. https://advetresearch.com/index.php/AVR/article/view/189.