Nieuwkoop, P. D. (1956). Normal table of Xenopus laevis (Daudin): A systemat. and chronolog. survey of the development from the fertilized egg till the end of metamorphosis. North-Holland Publ. Comp.
Chicago-Zitierstil (17. Ausg.)Nieuwkoop, Pieter Dirk. Normal Table of Xenopus Laevis (Daudin): A Systemat. and Chronolog. Survey of the Development from the Fertilized Egg Till the End of Metamorphosis. Amsterdam: North-Holland Publ. Comp, 1956.
MLA-Zitierstil (9. Ausg.)Nieuwkoop, Pieter Dirk. Normal Table of Xenopus Laevis (Daudin): A Systemat. and Chronolog. Survey of the Development from the Fertilized Egg Till the End of Metamorphosis. North-Holland Publ. Comp, 1956.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.