T.  Barbour and Loveridge, A., ?A comparative study of the herpetological faunae of the Uluguru and Usambara Mountains, Tanganyika Territory with descriptions of new species?, Memoirs of the Museum of Comparative Zoology, vol. L, pp. 85-265, 1928.

J. C.  Poynton and Broadley, D. G., ?Amphibia Zambesiaca 2: Ranidae?, Ann. Natal Mus., vol. 27, pp. 115-181, 1985.

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.

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.