Bulletin of Popular Information (Arnold Arboretum, Harvard University). Arnold Arboretum of Harvard University.
Citazione stile Chigago Style (17a edizione)Bulletin of Popular Information (Arnold Arboretum, Harvard University). Arnold Arboretum of Harvard University.
Citatione MLA (8a ed.)Bulletin of Popular Information (Arnold Arboretum, Harvard University). Arnold Arboretum of Harvard University.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.