APA استشهاد

Rebecca P Butler. (2012). Copyright for Teachers and Librarians in the 21st Century. ESS ESS Publications.

استشهاد بنمط شيكاغو

Rebecca P Butler. Copyright for Teachers and Librarians in the 21st Century. New Delhi: ESS ESS Publications, 2012.

MLA استشهاد

Rebecca P Butler. Copyright for Teachers and Librarians in the 21st Century. ESS ESS Publications, 2012.