APA

Twentieth Century Fund, . (1935). The security markets. New York City: Twentieth Century Fund, Inc.

Chicago

Twentieth Century Fund, . 1935. The security markets. New York City: Twentieth Century Fund, Inc.

Harvard

Twentieth Century Fund, . (1935). The security markets. New York City: Twentieth Century Fund, Inc.

MLA

Twentieth Century Fund, . The security markets. New York City: Twentieth Century Fund, Inc. 1935.