Borinskikh L. I. (1990c). 'The method to reveal a character in the works of R.L. Stevenson [The Strange Case of Dr Jekyll and Mr Hyde]'/. In *** (ed.) The Problem of character in literature. Tchelyabinsk: Tchelyabinsk State University. Pp. 31–32. [in Russian, German and Hindi].
Richard Dury, ed. (2005). The Annotated Dr Jekyll and Mr Hyde. ISBN 88-7544-030-1, over 80 pages of introduction material, extensive annotation notes, 40 pages of derivative works and extensive bibliography.
Paul M. Gahlinger, M.D., PhD (2001). Illegal Drugs: A Complete Guide to their History, Chemistry, Use, and Abuse. Sagebrush Medical Guide. Pg 41. ISBN 0-9703130-1-2.
Kathrine Linehan, ed. (2003). Strange Case of Dr Jekyll and Mr Hyde. Norton Critical Edition, contains extensive annotations, contextual essays and criticisms. ISBN 0-393-97465-0
