Blackburn, D. (2008). "Biogeography and evolution of body size and life history of African frogs: Phylogeny of squeakers (Arthroleptis) and long-fingered frogs (Cardioglossa) estimated from mitochondrial data". Molecular Phylogenetics and Evolution. 49 (3): 806–826. Bibcode:2008MolPE..49..806B. doi:10.1016/j.ympev.2008.08.015. PMID18804169.
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Blackburn, D. (2008). "Biogeography and evolution of body size and life history of African frogs: Phylogeny of squeakers (Arthroleptis) and long-fingered frogs (Cardioglossa) estimated from mitochondrial data". Molecular Phylogenetics and Evolution. 49 (3): 806–826. Bibcode:2008MolPE..49..806B. doi:10.1016/j.ympev.2008.08.015. PMID18804169.
Blackburn, D. (2008). "Biogeography and evolution of body size and life history of African frogs: Phylogeny of squeakers (Arthroleptis) and long-fingered frogs (Cardioglossa) estimated from mitochondrial data". Molecular Phylogenetics and Evolution. 49 (3): 806–826. Bibcode:2008MolPE..49..806B. doi:10.1016/j.ympev.2008.08.015. PMID18804169.