International Botanical. (1961). Congress. 9th., Montreal, 1959 International code of botanical nomenclature adopted by the 9th. International Botanical Congress, Montreal, August 1959. s.e..
Cita Chicago Style (17a ed.)International Botanical. Congress. 9th., Montreal, 1959 International Code of Botanical Nomenclature Adopted by the 9th. International Botanical Congress, Montreal, August 1959. Uthecht: s.e., 1961.
Cita MLA (9a ed.)International Botanical. Congress. 9th., Montreal, 1959 International Code of Botanical Nomenclature Adopted by the 9th. International Botanical Congress, Montreal, August 1959. s.e., 1961.
Nota: a formatação da citação pode não corresponder 100% ao definido pela respectiva norma.