Eleventh International Botanical Congres Seattle. (1972). Report on Botanical nomenclature seattle 1969. International Bureau for Plant Taxonomy.
Citazione stile Chigago Style (17a edizione)Eleventh International Botanical Congres Seattle. Report on Botanical Nomenclature Seattle 1969. Netherlands: International Bureau for Plant Taxonomy, 1972.
Citatione MLA (9a ed.)Eleventh International Botanical Congres Seattle. Report on Botanical Nomenclature Seattle 1969. International Bureau for Plant Taxonomy, 1972.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.