Παραπομπή APA

Hadfield, C. (2013). An astronauts guide to life on earth. Macmillan.

Παραπομπή Chicago Style

Hadfield, Chris. An Astronauts Guide to Life on Earth. London: Macmillan, 2013.

Παραπομπή MLA

Hadfield, Chris. An Astronauts Guide to Life on Earth. Macmillan, 2013.