Παραπομπή APA

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

Παραπομπή Chicago Style

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

Παραπομπή MLA

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