A treatise on the small-pox and measles /
by Abú Becr Mohammed ibn Zacaríyá ar-Rází (commonly called Rhazes) ; translated from the original Arabic by William Alexander Greenhill.

APA Citation

Rāzī, A. Bakr Muḥammad ibn Zakarīyā., Greenhill, W. Alexander., Greenhill, W. Alexander., Milwaukee Academy of Medicine. Book Collection. (1848). A treatise on the small-pox and measles. London: Sydenham Society.

MLA Citation

Rāzī, Abū Bakr Muḥammad ibn Zakarīyā, 865?-925?, William Alexander Greenhill, William Alexander Greenhill, and Milwaukee Academy of Medicine. Book Collection. A Treatise On the Small-pox And Measles. London: Sydenham Society, 1848.

Warning: These citations may not always be complete (especially for serials).