Παραπομπή σε μορφή APA (7η εκδ.)

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

Παραπομπή σε μορφή Chicago (17η εκδ.)

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

Παραπομπή σε μορφή MLA (9th εκδ.)

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