O'Gorman,, J. (2010). Reference sources for small and medium sized libraries. Ess Ess.
استشهاد بنمط شيكاغوO'Gorman,, Jack. Reference Sources for Small and Medium Sized Libraries. New Delhi: Ess Ess, 2010.
MLA استشهادO'Gorman,, Jack. Reference Sources for Small and Medium Sized Libraries. Ess Ess, 2010.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.