Citazione Stile APA (7a Edizione)
(1972). Addendum-corrigendum to the second edition of the United Nations list of national parks and equivalent reserves. IUCN.
Citazione stile Chigago Style (17a edizione)
Addendum-corrigendum to the Second Edition of the United Nations List of National Parks and Equivalent Reserves. s.l.: IUCN, 1972.
Citatione MLA (9a ed.)
Addendum-corrigendum to the Second Edition of the United Nations List of National Parks and Equivalent Reserves. IUCN, 1972.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.