Tyagi, B. S. (1996). Coordinate Geometry (14th ed.). Pragati Prakashan.
Chicago Style (17th ed.) ZitazioaTyagi, B. S. Coordinate Geometry. 14th ed. New Delhi: Pragati Prakashan, 1996.
MLA (9th ed.) ZitazioaTyagi, B. S. Coordinate Geometry. 14th ed. Pragati Prakashan, 1996.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.