Dyfyniad APA

American Society for Testing Materials. (1947). Proceedings, Volume 46. 1946. American Society for Testing Materials.

Dyfyniad Arddull Chicago

American Society for Testing Materials. Proceedings, Volume 46. 1946. Philadelphia: American Society for Testing Materials, 1947.

Dyfyniad MLA

American Society for Testing Materials. Proceedings, Volume 46. 1946. American Society for Testing Materials, 1947.

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