Chhapgar,B F. (1991). Wonder world under water. National Book Trust.
Chicago Style aipamenaChhapgar,B F. Wonder World Under Water. New Delhi: National Book Trust, 1991.
MLA aipamenaChhapgar,B F. Wonder World Under Water. National Book Trust, 1991.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.