Stevens, R. (1969). Dictionary of organic Compounds: The constitution and physical, chemical and other properties of the principal carbon compounds and their derivatives, together with relevant literature references (4a ed.). London: EYRE.

Stevens, R. Dictionary of Organic Compounds: The Constitution and Physical, Chemical and Other Properties of the Principal Carbon Compounds and Their Derivatives, Together With Relevant Literature References. 4a ed. London: EYRE, 1969.

Stevens, R. Dictionary of Organic Compounds: The Constitution and Physical, Chemical and Other Properties of the Principal Carbon Compounds and Their Derivatives, Together With Relevant Literature References. 4a ed. London: EYRE, 1969.