Douglass, R. D., & Heldin, S. D. (1947). Calculus and its applications. Prentice-Hall of India.
استشهاد بنمط شيكاغوDouglass, Raymond D., و Samuel D. Heldin. Calculus and Its Applications. New Jersey: Prentice-Hall of India, 1947.
MLA استشهادDouglass, Raymond D., و Samuel D. Heldin. Calculus and Its Applications. Prentice-Hall of India, 1947.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.