APA (7. basım) Alıntı

Heal, G. M. (1998). Valuing the future: Economic theory and sustainability. Columbia University Press.

Chicago Style (17. basım) Atıf

Heal, G. M. Valuing the Future: Economic Theory and Sustainability. New York: Columbia University Press, 1998.

MLA (9th ed.) Atıf

Heal, G. M. Valuing the Future: Economic Theory and Sustainability. Columbia University Press, 1998.