Cita APA (7th ed.)

Frederick R. Chromey. (2012). To Measure the Sky (1.). Cambridge University Press.

Cita Chicago (17th ed.)

Frederick R. Chromey. To Measure the Sky. 1. Cambridge University Press, 2012.

Cita MLA (8th ed.)

Frederick R. Chromey. To Measure the Sky. 1. Cambridge University Press, 2012.