E. O. Uche-Nwanchi, C. V. Mitchell, and C. McEwen, “STEROIDOGENIC ENZYME HISTOCHEMISTRY IN THE TESTIS OF SPRAGUE DAWLEY RATS FOLLOWING THE ADMINISTRATION THE WATER EXTRACTS FROM CARICA PAPAYA SEED”, Afr J Tradit Complement Altern Med, vol. 8, no. 1, pp. 69–78, Sep. 2010.