Gribbin, J., & Gribbin , M. (1999). Almost everyone's guide to science: The universe,life and everything. Univrrsities Press.
استشهاد بنمط شيكاغوGribbin, John, و Mary Gribbin. Almost Everyone's Guide to Science: The Universe,life and Everything. Hyderabad: Univrrsities Press, 1999.
MLA استشهادGribbin, John, و Mary Gribbin. Almost Everyone's Guide to Science: The Universe,life and Everything. Univrrsities Press, 1999.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.