APA

Heard A., . (1960). The costs of democracy. Chapel Hill: University of North Carolina Press.

Chicago

Heard Alexander, . 1960. The costs of democracy. Chapel Hill: University of North Carolina Press.

Harvard

Heard A., . (1960). The costs of democracy. Chapel Hill: University of North Carolina Press.

MLA

Heard Alexander, . The costs of democracy. Chapel Hill: University of North Carolina Press. 1960.