APA

Darwin C., Mayr E., . (1998). On the origin of species : a facsimile of th e first edition with an introduction by Ernst Mayr. Cambridge: Harvard University Press.

Chicago

Darwin Charles, Mayr Ernst, . 1998. On the origin of species : a facsimile of th e first edition with an introduction by Ernst Mayr. Cambridge: Harvard University Press.

Harvard

Darwin C., Mayr E., . (1998). On the origin of species : a facsimile of th e first edition with an introduction by Ernst Mayr. Cambridge: Harvard University Press.

MLA

Darwin Charles, Mayr Ernst, . On the origin of species : a facsimile of th e first edition with an introduction by Ernst Mayr. Cambridge: Harvard University Press. 1998.