Dyfyniad APA
Wertz, W. R. (2014). Lynton Keith Caldwell: An environmental visionary and the national environmental policy act. Indiana University Press.
Dyfyniad Arddull Chicago
Wertz, Wendy Read. Lynton Keith Caldwell: An Environmental Visionary and the National Environmental Policy Act. Bloomington, Indiana: Indiana University Press, 2014.
Dyfyniad MLA
Wertz, Wendy Read. Lynton Keith Caldwell: An Environmental Visionary and the National Environmental Policy Act. Indiana University Press, 2014.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.