APA

Crum W. L., . (1953). The age structure of the cormporate system. Berkeley: University of California Press.

Chicago

Crum William Leonard, . 1953. The age structure of the cormporate system. Berkeley: University of California Press.

Harvard

Crum W. L., . (1953). The age structure of the cormporate system. Berkeley: University of California Press.

MLA

Crum William Leonard, . The age structure of the cormporate system. Berkeley: University of California Press. 1953.