Assey, R.J. “Morphological Studies of the Peyer’s Patch of The Goat (Capra Hircus) II. Microscopic Changes With Age”. Tanzania Veterinary Journal 10, no. 3 (September 30, 1990): 75–82. Accessed April 14, 2026. http://tvj.sua.ac.tz/vet2/index.php/TVJ/article/view/360.