Dyfyniad APA

Encylopedia... (1974). Chemical and process technology encylopedia. Mc Graw Hill.

Dyfyniad Arddull Chicago

Encylopedia... Chemical and Process Technology Encylopedia. Mc Graw Hill, 1974.

Dyfyniad MLA

Encylopedia... Chemical and Process Technology Encylopedia. Mc Graw Hill, 1974.

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