APA

Black J. D., . (1942). Parity, parity, parity. Cambridge: Harvard committee on research in the social sciences.

Chicago

Black John Donald, . 1942. Parity, parity, parity. Cambridge: Harvard committee on research in the social sciences.

Harvard

Black J. D., . (1942). Parity, parity, parity. Cambridge: Harvard committee on research in the social sciences.

MLA

Black John Donald, . Parity, parity, parity. Cambridge: Harvard committee on research in the social sciences. 1942.