APA استشهاد

Lang, S. (1973). First course in calculus (23.).

استشهاد بنمط شيكاغو

Lang, Serge. First Course in Calculus. 23. Addison-Wesley Publishing Company, Massachusetts, 1973.

MLA استشهاد

Lang, Serge. First Course in Calculus. 23. 1973.