APA-referens (7:e uppl.)

Leon S., M. (2023). Tree planting in the Central, Piedmont and Southern Appalachian Regions. US Departmrnt of Agriculture, USA.

Chicago-referens (17:e uppl.)

Leon S., Minckler. Tree Planting in the Central, Piedmont and Southern Appalachian Regions. US Departmrnt of Agriculture, USA, 2023.

MLA-referens (9:e uppl.)

Leon S., Minckler. Tree Planting in the Central, Piedmont and Southern Appalachian Regions. US Departmrnt of Agriculture, USA, 2023.

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