STRICKLAND , L.; EDMONDSON , M.; MAXWELL , H.; NEWTON , J.; WRIGHT , J.; RODNING , S.; CARSON , R.; WOLFE , D. Surface Architectural Anatomy Of The Penile And Preputial Epithelium Of Bulls. Clinical Theriogenology, v. 6, n. 4, p. 445-451, 1 Dec. 2014.