Dyfyniad APA

Petesch, P. L., & Strong, M. F. (1992). North-South environmental strategies, costs, and bargains. Overseas Development Council.

Dyfyniad Arddull Chicago

Petesch, Patti L., and Maurice F. Strong. North-South Environmental Strategies, Costs, and Bargains. Washington, D.C: Overseas Development Council, 1992.

Dyfyniad MLA

Petesch, Patti L., and Maurice F. Strong. North-South Environmental Strategies, Costs, and Bargains. Overseas Development Council, 1992.

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