Johnson, G. B. (2000). The living world (2nd ed.). McGraw-Hill.
Cita Chicago Style (17a ed.)Johnson, George B. The Living World. 2nd ed. Boston: McGraw-Hill, 2000.
Cita MLA (8a ed.)Johnson, George B. The Living World. 2nd ed. McGraw-Hill, 2000.
Precaución: Estas citas no son 100% exactas.