Cita APA

Popenoe, H. (1976). Soil conservation in Central America and Panama: Current problems.

Chicago Style Citation

Popenoe, Hugh. Soil Conservation in Central America and Panama: Current Problems. 1976.

Cita MLA

Popenoe, Hugh. Soil Conservation in Central America and Panama: Current Problems. 1976.

Atenció: Aquestes cites poden no estar 100% correctes.