APA

Brown R. W., . (1921). The writer's art by those who have practiced it. Cambridge: Harvard University Press; [etc., etc.].

Chicago

Brown Rollo Walter, . 1921. The writer's art by those who have practiced it. Cambridge: Harvard University Press; [etc., etc.].

Harvard

Brown R. W., . (1921). The writer's art by those who have practiced it. Cambridge: Harvard University Press; [etc., etc.].

MLA

Brown Rollo Walter, . The writer's art by those who have practiced it. Cambridge: Harvard University Press; [etc., etc.]. 1921.