Cita APA (7a ed.)

Ruddle, K., & Chesterfield, R. (1977). Education for traditional food procurement in the Orinoco delta. University Press.

Cita Chicago Style (17a ed.)

Ruddle, Kenneth, y Ray Chesterfield. Education for Traditional Food Procurement in the Orinoco Delta. Berkeley, California: University Press, 1977.

Cita MLA (9a ed.)

Ruddle, Kenneth, y Ray Chesterfield. Education for Traditional Food Procurement in the Orinoco Delta. University Press, 1977.