Gray, A. (2015). Manual of the botany of the Northern United States: Including the distriet east of the Mississipi and North of North Carolina and Tennessee.
Cita Chicago Style (17a ed.)Gray, Asa. Manual of the Botany of the Northern United States: Including the Distriet East of the Mississipi and North of North Carolina and Tennessee. 2015.
Cita MLA (9a ed.)Gray, Asa. Manual of the Botany of the Northern United States: Including the Distriet East of the Mississipi and North of North Carolina and Tennessee. 2015.
Precaución: Estas citas no son 100% exactas.