APA

Crouch B. R., . (1981). Extensión education and rural development. New York: John Wiley & Sons.

Chicago

Crouch Bruce R, . 1981. Extensión education and rural development. New York: John Wiley & Sons.

Harvard

Crouch B. R., . (1981). Extensión education and rural development. New York: John Wiley & Sons.

MLA

Crouch Bruce R, . Extensión education and rural development. New York: John Wiley & Sons. 1981.