(2020). 天文爱好者．2020,no.9-12.
Chicago Style aipamena天文爱好者．2020,no.9-12. 2020.
MLA aipamena天文爱好者．2020,no.9-12. 2020.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.
APA aipamena
(2020). 天文爱好者．2020,no.9-12.
Chicago Style aipamena天文爱好者．2020,no.9-12. 2020.
MLA aipamena天文爱好者．2020,no.9-12. 2020.