Elkin, R. S. (2013). Green Wall Infrastructure in China: The Chinese 3-North Shelterbelt Program is the largest afforestation program in the world, extending across over 40 percent of the country. Topos.
Chicago-Zitierstil (17. Ausg.)Elkin, Rosetta Sarah. "Green Wall Infrastructure in China: The Chinese 3-North Shelterbelt Program Is the Largest Afforestation Program in the World, Extending Across over 40 Percent of the Country." Topos 2013.
MLA-Zitierstil (8. Ausg.)Elkin, Rosetta Sarah. "Green Wall Infrastructure in China: The Chinese 3-North Shelterbelt Program Is the Largest Afforestation Program in the World, Extending Across over 40 Percent of the Country." Topos, 2013.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.