Cita APA

Struve, O., Lynds, B., & Pillans, H. (1959). Elementary Astronomy. New York: Oxford University.

Chicago Style Citation

Struve, Otto., Beverly Lynds, i Helen Pillans. Elementary Astronomy. New York: Oxford University, 1959.

Cita MLA

Struve, Otto., Beverly Lynds, i Helen Pillans. Elementary Astronomy. New York: Oxford University, 1959.

Atenció: Aquestes cites poden no estar 100% correctes.