Dyfyniad APA

(2000). Basic science and technology statistics (1999 edition.). OECD.

Dyfyniad Arddull Chicago

Basic Science and Technology Statistics. 1999 edition. Paris, Cedex, France: OECD, 2000.

Dyfyniad MLA

Basic Science and Technology Statistics. 1999 edition. OECD, 2000.

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