Kaushik Soma. (2008). Birju's Problem. National Book Trust.
Chicago Style aipamenaKaushik Soma. Birju's Problem. New Delhi: National Book Trust, 2008.
MLA aipamenaKaushik Soma. Birju's Problem. National Book Trust, 2008.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.