Dyfyniad APA

ebrary, Inc, & Nelson, A. C. (2009). Environmental regulations and housing costs. Island Press.

Dyfyniad Arddull Chicago

ebrary, Inc, and Arthur C. Nelson. Environmental Regulations and Housing Costs. Washington D.C.: Island Press, 2009.

Dyfyniad MLA

ebrary, Inc, and Arthur C. Nelson. Environmental Regulations and Housing Costs. Island Press, 2009.

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