APA aipamena

Walker Sally M. (2010). Early Bird Earth Science Earthquakes. Lerner.

Chicago Style aipamena

Walker Sally M. Early Bird Earth Science Earthquakes. Lerner, 2010.

MLA aipamena

Walker Sally M. Early Bird Earth Science Earthquakes. Lerner, 2010.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.