MostofiF.K.: Testes, scrotum, and penis. In: Pathology, ed. Anderson and Kissane, pp. 1022–1024, 7th ed.C. V. Mosby, St Louis, 1977
2.
MoultonJ.E.: Tumors of the genital system. In: Tumors in Domestic Animals, ed. Moulton, pp. 313–315, 2nd ed.University of California Press, Berkeley, 1978
3.
NielsenS.W.; LeinD.H.: Tumors of the testis.Bull WHO50: 71–78, 1974