Cita APA

Russell, H. N. (1919). Some Problems of Sidereal Astronomy.

Chicago Style Citation

Russell, Henry Norris. Some Problems of Sidereal Astronomy. 1919.

Cita MLA

Russell, Henry Norris. Some Problems of Sidereal Astronomy. 1919.

Atenció: Aquestes cites poden no estar 100% correctes.