Waheed , M.M., I.M. Ghoneim, and M.M. Hassieb. 2011. “Development And Validation Of Testicular Biopsy For Diagnosis Of Infertility In Camels (Camelus Dromedarius)”. Clinical Theriogenology 3 (2):105-14. https://clinicaltheriogenology.net/index.php/CT/article/view/10136.