Cita APA

Engle, E., & Drummond, K. H. (1968). Sky Watchers (edición adapted by Robert M. Walker.). New York: Dell Publishing.

Citación estilo Chicago

Engle, Eloise,, y Kenneth H. Drummond. Sky Watchers. edición adapted by Robert M. Walker. New York: Dell Publishing, 1968.

Cita MLA

Engle, Eloise,, y Kenneth H. Drummond. Sky Watchers. edición adapted by Robert M. Walker. New York: Dell Publishing, 1968.