Cita APA (7a ed.)

Impey, C. D., Wenger, M. C., & Austin, C. L. (2015). Astronomy for astronomical numbers: A worldwide massive open online class. Athabasca University Press.

Cita Chicago Style (17a ed.)

Impey, Chris D., Matthew C. Wenger, y Carmen L. Austin. Astronomy for Astronomical Numbers: A Worldwide Massive Open Online Class. Athabasca University Press, 2015.

Cita MLA (8a ed.)

Impey, Chris D., et al. Astronomy for Astronomical Numbers: A Worldwide Massive Open Online Class. Athabasca University Press, 2015.