Dyfyniad APA

Shultz, S., Faustino, J., & Melgar, D. (1997). Agroforestry and soil conservation: Adoption and profitability in El Salvador.

Dyfyniad Arddull Chicago

Shultz, Steven, Jorge Faustino, y Douglas Melgar. Agroforestry and Soil Conservation: Adoption and Profitability in El Salvador. 1997.

Dyfyniad MLA

Shultz, Steven, Jorge Faustino, y Douglas Melgar. Agroforestry and Soil Conservation: Adoption and Profitability in El Salvador. 1997.

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.