APA

American Council of Learned Societies, . (1991). Biographical dictionary of mathematicians: reference biographies from the Dictionary of scientific biography. New York: Scribner.

Chicago

American Council of Learned Societies, . 1991. Biographical dictionary of mathematicians: reference biographies from the Dictionary of scientific biography. New York: Scribner.

Harvard

American Council of Learned Societies, . (1991). Biographical dictionary of mathematicians: reference biographies from the Dictionary of scientific biography. New York: Scribner.

MLA

American Council of Learned Societies, . Biographical dictionary of mathematicians: reference biographies from the Dictionary of scientific biography. New York: Scribner. 1991.