J. C.  Poynton, ?Amphibians of southeastern Tanzania, with special reference to Stephopaedes and Mertensophryne (Bufonidae)?, Bulletin of the Museum of Comparative Zoology, vol. 152, pp. 451-473, 1991.

L.  Minter, Burger, M., Harrison, J., Braack, H. H., Bishop, P. J., and Kloepfer, D., Eds., Atlas and Red Data Book of the Frogs of South Africa, Lesotho and Swaziland, vol. 9. Washington, D.C.: Smithsonian Institution, 2004.

E. B.  Harper, Measey, G. J., Patrick, D. A., Menegon, M., and Vonesh, J. R., Field Guide to Amphibians of the Eastern Arc Mountains and Coastal Forests of Tanzania and Kenya. Nairobi, Kenya: Camerapix Publishers International, 2010, p. 320.