Sukhbir Singh. (1992). Twenty five years of library science writings. Ess Ess Publications.
استشهاد بنمط شيكاغوSukhbir Singh. Twenty Five Years of Library Science Writings. Delhi: Ess Ess Publications, 1992.
MLA استشهادSukhbir Singh. Twenty Five Years of Library Science Writings. Ess Ess Publications, 1992.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.