APA (7th ed.) Zitazioa
(2019). Heartstopper. Volume 1. Hodder Children's Books.
Chicago Style (17th ed.) Zitazioa
Heartstopper. Volume 1. London: Hodder Children's Books, 2019.
MLA (9th ed.) Zitazioa
Heartstopper. Volume 1. Hodder Children's Books, 2019.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.