Cita APA (7a ed.)
Graham, P. H. (1982). Plant factors affecting symbiotic nitrogen fixation in legumes. International Center for Tropical Agriculture.
Cita Chicago Style (17a ed.)
Graham, Peter H. Plant Factors Affecting Symbiotic Nitrogen Fixation in Legumes. International Center for Tropical Agriculture, 1982.
Cita MLA (9a ed.)
Graham, Peter H. Plant Factors Affecting Symbiotic Nitrogen Fixation in Legumes. International Center for Tropical Agriculture, 1982.
Precaución: Estas citas no son 100% exactas.