Osborn H.F. 1910. The Age of Mammals. Macmillan. [1]
unsl.edu.ar
www0.unsl.edu.ar
Wegener, A. (2003) [1912]. Translated by Roland von Huene. The Origins of Continents (http://www0.unsl.edu.ar/~bibliogeo/index_archivos/wegener.pdf). Milestones in Geosciences. Berlin, Heidelberg: Springer: 4–17. doi:10.1007/978-3-662-08763-3_1. ISBN 978-3-642-07919-1. (Original German article from 1912 with English translation from 2003.)