Hughes, J. (2019). Life: Student's book. Australia: National Geographic Learning.
Chicago Style aipamenaHughes, John. Life: Student's Book. Australia: National Geographic Learning, 2019.
MLA aipamenaHughes, John. Life: Student's Book. Australia: National Geographic Learning, 2019.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.