Dyfyniad APA

(1977). Quality of the environment in Japan 1977. Japan: Environment Agency.

Dyfyniad Arddull Chicago

Quality of the Environment in Japan 1977. Japan: Environment Agency, 1977.

Dyfyniad MLA

Quality of the Environment in Japan 1977. Japan: Environment Agency, 1977.

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