ScienceDirect (Online service) & Becker, H. (1973). Organicum: Practical handbook of organic chemistry ([1st English ed.].). Addison-Wesley Pub. Co..
Chicago Style (17th ed.) CitationScienceDirect (Online service) and Heinz Becker. Organicum: Practical Handbook of Organic Chemistry. [1st English ed.]. Reading, Mass.: Addison-Wesley Pub. Co., 1973.
MLA (9th ed.) CitationScienceDirect (Online service) and Heinz Becker. Organicum: Practical Handbook of Organic Chemistry. [1st English ed.]. Addison-Wesley Pub. Co., 1973.
Warning: These citations may not always be 100% accurate.