Cita APA (7th ed.)

Barbier, E. B. (1993). Economics and ecology: New frontiers and sustainable development. Chapman and Hall.

Cita Chicago (17th ed.)

Barbier, Edward B. Economics and Ecology: New Frontiers and Sustainable Development. London: Chapman and Hall, 1993.

Cita MLA (9th ed.)

Barbier, Edward B. Economics and Ecology: New Frontiers and Sustainable Development. Chapman and Hall, 1993.