ScienceDirect (Online service) & Clayton, R. B. (1969). Steroids and terpenoids. Academic Press.
Chicago Style (17th ed.) CitationScienceDirect (Online service) and Raymond B. Clayton. Steroids and Terpenoids. New York: Academic Press, 1969.
MLA (9th ed.) CitationScienceDirect (Online service) and Raymond B. Clayton. Steroids and Terpenoids. Academic Press, 1969.
Warning: These citations may not always be 100% accurate.