APA (7th ed.) Zitazioa
Sharma, B. D. (1999). Differential equations. Kedar Nath Ram Nath.
Chicago Style (17th ed.) Zitazioa
Sharma, Bhu Dev. Differential Equations. New Delhi: Kedar Nath Ram Nath, 1999.
MLA (9th ed.) Zitazioa
Sharma, Bhu Dev. Differential Equations. Kedar Nath Ram Nath, 1999.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.