Dyfyniad APA

Liroff, R. A. (1976). A National policy for the environment: Nepa and its aftermath. Indiana U.Pr.

Dyfyniad Arddull Chicago

Liroff, Richard A. A National Policy for the Environment: Nepa and Its Aftermath. London: Indiana U.Pr, 1976.

Dyfyniad MLA

Liroff, Richard A. A National Policy for the Environment: Nepa and Its Aftermath. Indiana U.Pr, 1976.

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