Chatterji, P. N. Trigonometry. Rajhans Prakashan Mandir.
Chicago Style (17th ed.) ZitazioaChatterji, P. N. Trigonometry. Meerut: Rajhans Prakashan Mandir.
MLA (9th ed.) ZitazioaChatterji, P. N. Trigonometry. Rajhans Prakashan Mandir.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.