Cita APA (7a ed.)

Sprout, H., & Sprout, M. (1978). The Context of Environmental Politics: Unfinished Business for America's Third Century. The University Press of Kentucky.

Cita Chicago Style (17a ed.)

Sprout, Harold, y Margaret Sprout. The Context of Environmental Politics: Unfinished Business for America's Third Century. Lexington, Kentucky: The University Press of Kentucky, 1978.

Cita MLA (8a ed.)

Sprout, Harold, y Margaret Sprout. The Context of Environmental Politics: Unfinished Business for America's Third Century. The University Press of Kentucky, 1978.