Cita APA (7a ed.)

Hughes, D. W., & Davis, D. (1989). The moon. Facts on File.

Cita Chicago Style (17a ed.)

Hughes, David W., y Donald Davis. The Moon. New York: Facts on File, 1989.

Cita MLA (9a ed.)

Hughes, David W., y Donald Davis. The Moon. Facts on File, 1989.