APA সাইটেশন

Douglass, R. D., & Heldin, S. D. (1947). Calculus and its applications. Prentice-Hall of India.

শিকাগো স্টাইলে সাইটেশন

Douglass, Raymond D., এবং Samuel D. Heldin. Calculus and Its Applications. New Jersey: Prentice-Hall of India, 1947.

এমএলএ সাইটেশন

Douglass, Raymond D., এবং Samuel D. Heldin. Calculus and Its Applications. Prentice-Hall of India, 1947.