The Nobel Prize in Chemistry 1980
Paul Berg, Walter Gilbert, Frederick Sanger
The Nobel Prize in Chemistry 1980 was divided, one half awarded to Paul Berg "for his fundamental studies of the biochemistry of nucleic acids, with particular regard to recombinant-DNA", the other half jointly to Walter Gilbert and Frederick Sanger "for their contributions concerning the determination of base sequences in nucleic acids".
MLA style: "The Nobel Prize in Chemistry 1980". Nobelprize.org. 24 May 2013 http://www.nobelprize.org/nobel_prizes/chemistry/laureates/1980/