APA استشهاد

Purcell, E. . .. (1981). Electricity and magnetism, Vol 2 (1.). Mc Graw Hill Book Company.

استشهاد بنمط شيكاغو

Purcell, Edward.M. Electricity and Magnetism, Vol 2. 1. : Mc Graw Hill Book Company, 1981.

MLA استشهاد

Purcell, Edward.M. Electricity and Magnetism, Vol 2. 1. Mc Graw Hill Book Company, 1981.