Cita APA (7a ed.)

Villegas, D., Pereyra, F., & Ferrer, J. (2007). Soils, soil forming factors and pedogenetic processes of a sectorin the central-western Santa Cruz province.

Cita Chicago Style (17a ed.)

Villegas, D.C, F.X Pereyra, y J.A Ferrer. Soils, Soil Forming Factors and Pedogenetic Processes of a Sectorin the Central-western Santa Cruz Province. 2007.

Cita MLA (8a ed.)

Villegas, D.C, et al. Soils, Soil Forming Factors and Pedogenetic Processes of a Sectorin the Central-western Santa Cruz Province. 2007.