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.