Cita APA (7a ed.)

Perino, E. A., Ebora, J. B., Siapno, F. E., Mojica, C. M., & Calzeta, E. C. (2006). Economic valuation of grassland degradation under different pasture classifications. Sylvatrop.

Cita Chicago Style (17a ed.)

Perino, Enriqueta A., Juan B. Ebora, Florita E. Siapno, Carmelita M. Mojica, y Eduardo C. Calzeta. "Economic Valuation of Grassland Degradation Under Different Pasture Classifications." Sylvatrop 2006.

Cita MLA (9a ed.)

Perino, Enriqueta A., et al. "Economic Valuation of Grassland Degradation Under Different Pasture Classifications." Sylvatrop, 2006.