International Botanical Congress Seattle, Wash. (1972). International Code of botanical nomenclature: Adopted by the eleventh international botanical congress, Seattle, August 1969 = Code international de la nomenclature botanique = Internationaler Code der botanischen Nomenklatur. Oosthoek.
Chicago-Zitierstil (17. Ausg.)International Botanical Congress Seattle, Wash. International Code of Botanical Nomenclature: Adopted by the Eleventh International Botanical Congress, Seattle, August 1969 = Code International De La Nomenclature Botanique = Internationaler Code Der Botanischen Nomenklatur. Utrecht: Oosthoek, 1972.
MLA-Zitierstil (9. Ausg.)International Botanical Congress Seattle, Wash. International Code of Botanical Nomenclature: Adopted by the Eleventh International Botanical Congress, Seattle, August 1969 = Code International De La Nomenclature Botanique = Internationaler Code Der Botanischen Nomenklatur. Oosthoek, 1972.