Dyfyniad APA

(1972). Quality of the environment in Japan. Tokyo: Environment Agency.

Dyfyniad Arddull Chicago

Quality of the Environment in Japan. Tokyo: Environment Agency, 1972.

Dyfyniad MLA

Quality of the Environment in Japan. Tokyo: Environment Agency, 1972.

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