@inbook {354,
	title = {Quantitive constraints associated with reproductive mode in anurans},
	booktitle = {Evolutionary Biology of the Anurans: Contemporary Research on Major Problems},
	year = {1973},
	pages = {229-249},
	publisher = {University of Missouri Press},
	organization = {University of Missouri Press},
	address = {Columbia},
	author = {Salthe, S.N. and Duellman, W. E.},
	editor = {Vial, J.L.}
}
@article {158,
	title = {Reproductive Modes in Anuran Amphibians: Phylogenetic Significance of Adaptive Strategies},
	journal = {South African Journal of Science},
	volume = {81},
	number = {4},
	year = {1985},
	pages = {174-178},
	author = {Duellman, W. E.}
}
@inbook {159,
	title = {Amphibians in Africa and South America: Evolutionary History and Ecological Comparisons},
	booktitle = {Biological Relationships between Africa and South America},
	year = {1993},
	pages = {244-288},
	publisher = {Yale University Press},
	organization = {Yale University Press},
	address = {New Haven},
	author = {Duellman, W. E.},
	editor = {Goldblatt, P.}
}
