Citazione Stile APA (7a Edizione)

Ornstein, R. E., & Ehrlich, P. R. (1989). New world new mind: Moving toward conscious evolution. Doubleday.

Citazione stile Chigago Style (17a edizione)

Ornstein, Robert E., e Paul R. Ehrlich. New World New Mind: Moving Toward Conscious Evolution. New York: Doubleday, 1989.

Citatione MLA (9a ed.)

Ornstein, Robert E., e Paul R. Ehrlich. New World New Mind: Moving Toward Conscious Evolution. Doubleday, 1989.