Dyfyniad APA

Steiner, F. R., & Thompson, G. F. (1997). Ecological design and planning. John Wiley.

Dyfyniad Arddull Chicago

Steiner, Frederick R., and George F. Thompson. Ecological Design and Planning. New York: John Wiley, 1997.

Dyfyniad MLA

Steiner, Frederick R., and George F. Thompson. Ecological Design and Planning. John Wiley, 1997.

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