Yu, Z., & Lu, C. (2017). Historical cropland of the continental U.S. from 1850 to 2016, links to GeoTIFFs. PANGAEA.
Citazione stile Chigago Style (17a edizione)Yu, Zhen, e Chaoqun Lu. Historical Cropland of the Continental U.S. from 1850 to 2016, Links to GeoTIFFs. PANGAEA, 2017.
Citatione MLA (9a ed.)Yu, Zhen, e Chaoqun Lu. Historical Cropland of the Continental U.S. from 1850 to 2016, Links to GeoTIFFs. PANGAEA, 2017.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.