The Nobel Prize in Chemistry 1946
James B. Sumner, John H. Northrop, Wendell M. Stanley
James Batcheller Sumner
John Howard Northrop
Wendell Meredith Stanley
The Nobel Prize in Chemistry 1946 was divided, one half awarded to James Batcheller Sumner "for his discovery that enzymes can be crystallized", the other half jointly to John Howard Northrop and Wendell Meredith Stanley "for their preparation of enzymes and virus proteins in a pure form".
MLA style: "The Nobel Prize in Chemistry 1946". Nobelprize.org. 22 May 2013 http://www.nobelprize.org/nobel_prizes/chemistry/laureates/1946/