APA Alıntı

Senageldin, I., & Steer, A. (1994). Valuing the environment. World Bank.

Chicago Stili Alıntı

Senageldin, Ismail, ve Andrew Steer. Valuing the Environment. Washington: World Bank, 1994.

MLA Alıntı

Senageldin, Ismail, ve Andrew Steer. Valuing the Environment. World Bank, 1994.