APA استشهاد

Rich, B. (1960). Principles and problems of elementary algebra. McGraw Hill.

استشهاد بنمط شيكاغو

Rich, Barnett. Principles and Problems of Elementary Algebra. New Delhi: McGraw Hill, 1960.

MLA استشهاد

Rich, Barnett. Principles and Problems of Elementary Algebra. McGraw Hill, 1960.