Dyfyniad APA

Hartman, R. S., Huq, M., & Wheeler, D. (1997). Why paper mills clean up: Determinants of pollution abatement in four Asian countries. World Bank.

Dyfyniad Arddull Chicago

Hartman, Raymond S., Mainul Huq, and David Wheeler. Why Paper Mills Clean Up: Determinants of Pollution Abatement in Four Asian Countries. Washington, DC: World Bank, 1997.

Dyfyniad MLA

Hartman, Raymond S., et al. Why Paper Mills Clean Up: Determinants of Pollution Abatement in Four Asian Countries. World Bank, 1997.

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.