APA

Lutz E., . (1936). Roger Bacon's contribution to knowledge. New York: J. F. Wagner, inc.

Chicago

Lutz Edward, . 1936. Roger Bacon's contribution to knowledge. New York: J. F. Wagner, inc.

Harvard

Lutz E., . (1936). Roger Bacon's contribution to knowledge. New York: J. F. Wagner, inc.

MLA

Lutz Edward, . Roger Bacon's contribution to knowledge. New York: J. F. Wagner, inc. 1936.