APA
E. Heftmann, . (1983). Journal of Chromatography. New York: Elsevier.
Chicago
E. Heftmann, . 1983. Journal of Chromatography. New York: Elsevier.
Harvard
E. Heftmann, . (1983). Journal of Chromatography. New York: Elsevier.
MLA
E. Heftmann, . Journal of Chromatography. New York: Elsevier. 1983.