Cita APA (7a ed.)

Struve, O., Lynds, B., & Pillans, H. (1961). Elementary astronomy (2nd printing.). Oxford University Press.

Cita Chicago Style (17a ed.)

Struve, Otto, Beverly Lynds, y Helen Pillans. Elementary Astronomy. 2nd printing. New York: Oxford University Press, 1961.

Cita MLA (9a ed.)

Struve, Otto, et al. Elementary Astronomy. 2nd printing. Oxford University Press, 1961.