Cita APA

Wilford, J. N., & Wilford, J. N. (1987). The riddle of the dinosaur (1. edition.). New York, New York: Vintage Books.

Citación estilo Chicago

Wilford, John Noble, y John Noble Wilford. The Riddle of the Dinosaur. 1. edition. New York, New York: Vintage Books, 1987.

Cita MLA

Wilford, John Noble, y John Noble Wilford. The Riddle of the Dinosaur. 1. edition. New York, New York: Vintage Books, 1987.