Hobbs, W. H. (1947). Glacial studies of the Pleistocene of North America. J.W. Edwards.
Cita Chicago Style (17a ed.)Hobbs, William Herbert. Glacial Studies of the Pleistocene of North America. Ann Arbor: J.W. Edwards, 1947.
Cita MLA (8a ed.)Hobbs, William Herbert. Glacial Studies of the Pleistocene of North America. J.W. Edwards, 1947.
Precaución: Estas citas no son 100% exactas.