Cita APA (7a ed.)

(1944). The com et of 1577: Its place in the history of astronomy.

Cita Chicago Style (17a ed.)

The Com Et of 1577: Its Place in the History of Astronomy. New York, 1944.

Cita MLA (9a ed.)

The Com Et of 1577: Its Place in the History of Astronomy. 1944.