Dyfyniad APA

Eleventh International Botanical Congres Seattle. (1972). Report on Botanical nomenclature seattle 1969. International Bureau for Plant Taxonomy.

Dyfyniad Arddull Chicago

Eleventh International Botanical Congres Seattle. Report on Botanical Nomenclature Seattle 1969. Netherlands: International Bureau for Plant Taxonomy, 1972.

Dyfyniad MLA

Eleventh International Botanical Congres Seattle. Report on Botanical Nomenclature Seattle 1969. International Bureau for Plant Taxonomy, 1972.

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.