Dyfyniad APA

Thayer, R. L. (1994). Gray World, Green Heart Technology, Nature, And The Sustainable Landscape Robert L. Thayer. John Wiley & Sons.

Dyfyniad Arddull Chicago

Thayer, Robert L. Gray World, Green Heart Technology, Nature, And The Sustainable Landscape Robert L. Thayer. John Wiley & Sons, 1994.

Dyfyniad MLA

Thayer, Robert L. Gray World, Green Heart Technology, Nature, And The Sustainable Landscape Robert L. Thayer. John Wiley & Sons, 1994.

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