Cita APA (7a ed.)

Harper, K., & Blair, A. C. (2006). New Galaxy: Class book 1. Oxford University Press.

Cita Chicago Style (17a ed.)

Harper, Kathryn, y Alison Cadwallader Blair. New Galaxy: Class Book 1. Oxford: Oxford University Press, 2006.

Cita MLA (9a ed.)

Harper, Kathryn, y Alison Cadwallader Blair. New Galaxy: Class Book 1. Oxford University Press, 2006.