Cita APA (7th ed.)

Perren, R. (1995). Agriculture in depression, 1870-1940. Cambridge University Press.

Cita Chicago (17th ed.)

Perren, Richard. Agriculture in Depression, 1870-1940. Cambridge [England]: Cambridge University Press, 1995.

Cita MLA (8th ed.)

Perren, Richard. Agriculture in Depression, 1870-1940. Cambridge University Press, 1995.