Cita APA

Dworkin, S. (2009). The Viking in the wheat field: A scientist's struggle to preserve the world's harvest. Walker.

Citación estilo Chicago

Dworkin, Susan. The Viking in the Wheat Field: A Scientist's Struggle to Preserve the World's Harvest. New York: Walker, 2009.

Cita MLA

Dworkin, Susan. The Viking in the Wheat Field: A Scientist's Struggle to Preserve the World's Harvest. Walker, 2009.