Foster, S., & Johnson, R. L. (2008). National Geographic desk reference to nature's medicine. National Geographic ; Publishers Group UK [distributor].
Cita Chicago Style (17a ed.)Foster, Steven, y Rebecca L. Johnson. National Geographic Desk Reference to Nature's Medicine. Washington, D.C. : Enfield: National Geographic ; Publishers Group UK [distributor], 2008.
Cita MLA (8a ed.)Foster, Steven, y Rebecca L. Johnson. National Geographic Desk Reference to Nature's Medicine. National Geographic ; Publishers Group UK [distributor], 2008.
Precaución: Estas citas no son 100% exactas.