APA aipamena

North, J. (1995). The Norton history of Astronomy and cosmology. New York: W.W.Norton & Company.

Chicago Style aipamena

North, John. The Norton History of Astronomy and Cosmology. New York: W.W.Norton & Company, 1995.

MLA aipamena

North, John. The Norton History of Astronomy and Cosmology. New York: W.W.Norton & Company, 1995.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.