Cita APA (7a ed.)

Ward, H., & Anderson, W. (2003). The dragon machine (1st American ed.). Dutton Children's Books.

Cita Chicago Style (17a ed.)

Ward, Helen, y Wayne Anderson. The Dragon Machine. 1st American ed. New York: Dutton Children's Books, 2003.

Cita MLA (8a ed.)

Ward, Helen, y Wayne Anderson. The Dragon Machine. 1st American ed. Dutton Children's Books, 2003.

Precaución: Estas citas no son 100% exactas.