Citazione Stile APA (7a Edizione)

Ralls, J. W. (1976). Living for the future: Actions to conserve non-renewable resources for future generation. Exposition Press.

Citazione stile Chigago Style (17a edizione)

Ralls, J. Warner. Living for the Future: Actions to Conserve Non-renewable Resources for Future Generation. Hicksville, NY: Exposition Press, 1976.

Citatione MLA (9a ed.)

Ralls, J. Warner. Living for the Future: Actions to Conserve Non-renewable Resources for Future Generation. Exposition Press, 1976.