Dyfyniad APA

United Nations. (1968). Space science and technology. Vienna: United Nations.

Dyfyniad Arddull Chicago

United Nations. Space Science and Technology. Vienna: United Nations, 1968.

Dyfyniad MLA

United Nations. Space Science and Technology. Vienna: United Nations, 1968.

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