APA

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

Chicago

Ruddle Kenneth, Chesterfield Ray, . 1977. Education for traditional food procurement in the Orinoco delta. Berkeley: University of California Press.

Harvard

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

MLA

Ruddle Kenneth, Chesterfield Ray, . Education for traditional food procurement in the Orinoco delta. Berkeley: University of California Press. 1977.