APA

Rommen H. A., . (1947). The natural law. St. Louis: Herder.

Chicago

Rommen Heinrich Albert, . 1947. The natural law. St. Louis: Herder.

Harvard

Rommen H. A., . (1947). The natural law. St. Louis: Herder.

MLA

Rommen Heinrich Albert, . The natural law. St. Louis: Herder. 1947.