Bulletin of Popular Information (Arnold Arboretum, Harvard University). Arnold Arboretum of Harvard University.
Cita Chicago (17th ed.)Bulletin of Popular Information (Arnold Arboretum, Harvard University). Arnold Arboretum of Harvard University.
Cita MLA (9th ed.)Bulletin of Popular Information (Arnold Arboretum, Harvard University). Arnold Arboretum of Harvard University.
Atenció: Aquestes cites poden no estar 100% correctes.