Acharya, K. (2010). The green pen. Sage Publication.
Chicago Style aipamenaAcharya, Keya. The Green Pen. New Delhi: Sage Publication, 2010.
MLA aipamenaAcharya, Keya. The Green Pen. Sage Publication, 2010.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.