Cita APA (7a ed.)

Little, C. E. (1987). Green fields forever: The conservation tillage revolution in América. Island.

Cita Chicago Style (17a ed.)

Little, Charles E. Green Fields Forever: The Conservation Tillage Revolution in América. Washington: Island, 1987.

Cita MLA (8a ed.)

Little, Charles E. Green Fields Forever: The Conservation Tillage Revolution in América. Island, 1987.