@inbook{Mayr1976,
author = {Mayr, E.},
title= {Typological versus population thinking},
year = {1976},
editor = {Mayr, E.},
booktitle = {Evolution and the diversity of life: selected essays},
address = {Cambridge, Mass.},
publisher = {Belknap Press, Harvard University Press},
pages = {26--29},
}