Dyfyniad APA

(1968). Science Abstracts: Section A Physics Abstracts,Jul-Dec 65, eng.

Dyfyniad Arddull Chicago

Science Abstracts: Section A Physics Abstracts,Jul-Dec 65, Eng. 1968.

Dyfyniad MLA

Science Abstracts: Section A Physics Abstracts,Jul-Dec 65, Eng. 1968.

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