APA aipamena

Schneider, S. E. (2007). Pathways to astronomy. Boston: McGraw Hill.

Chicago Style aipamena

Schneider, Stephen E. Pathways to Astronomy. Boston: McGraw Hill, 2007.

MLA aipamena

Schneider, Stephen E. Pathways to Astronomy. Boston: McGraw Hill, 2007.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.