A. D.  Leache, Rödel, M. - O., Linkem, C. W., Diaz, R. E., Hillers, A., and Fujita, M. K., ?Biodiversity in a forest island: reptiles and amphibians of the West African Togo Hills?, Amphibian and Reptile Conservation, vol. 4, pp. 22-45, 2006.

D. C.  Blackburn, Kosuch, J., Burger, M., Schmitz, A., Wagner, P., L. Gonwouo, N., Hillers, A., and Rödel, M. - O., ?A new squeaker frog (Arthroleptidae: Arthroleptis) from the Cameroon Volcanic Line with redescriptions of Arthroleptis adolfifriederici Nieden, 1911 ?1910? and A. variabilis Matschie, 1893?, Breviora, vol. 515, pp. 1-23, 2009.