Gross, H. H. (1969). Exploring regions near and far. Follett.
Cita Chicago Style (17a ed.)Gross, Herbert H. Exploring Regions Near and Far. Chicago: Follett, 1969.
Cita MLA (9a ed.)Gross, Herbert H. Exploring Regions Near and Far. Follett, 1969.
Precaución: Estas citas no son 100% exactas.