Cita APA

Parsons, T. (1998). Identification of land degradation levels at the grassroots. s.l.: s.e..

Citación estilo Chicago

Parsons, Talcott. Identification of Land Degradation Levels At the Grassroots. s.l.: s.e., 1998.

Cita MLA

Parsons, Talcott. Identification of Land Degradation Levels At the Grassroots. s.l.: s.e., 1998.