APA استشهاد

Friedman, B. (1990). Principles and techniques of applied mathematics. Dover Publications.

استشهاد بنمط شيكاغو

Friedman, Bernard. Principles and Techniques of Applied Mathematics. New York: Dover Publications, 1990.

MLA استشهاد

Friedman, Bernard. Principles and Techniques of Applied Mathematics. Dover Publications, 1990.