Cita APA (7a ed.)

Kelsey, L. D., & Hearne, C. C. (1963). Cooperative extension work (3rd edition.). Comstock.

Cita Chicago Style (17a ed.)

Kelsey, Lincoln David, y Cannon Chiles Hearne. Cooperative Extension Work. 3rd edition. Ithaca: Comstock, 1963.

Cita MLA (8a ed.)

Kelsey, Lincoln David, y Cannon Chiles Hearne. Cooperative Extension Work. 3rd edition. Comstock, 1963.