Cita APA

Palen, S. E. (2002). Theory and problems of astronomy. New York: McGraw-Hill.

Citación estilo Chicago

Palen, Stacy E.. Theory and Problems of Astronomy. New York: McGraw-Hill, 2002.

Cita MLA

Palen, Stacy E.. Theory and Problems of Astronomy. New York: McGraw-Hill, 2002.