Cita APA (7a ed.)

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

Cita Chicago Style (17a ed.)

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

Cita MLA (8a ed.)

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