Dyfyniad APA

(1969). Solar-Geophysical data. U.S. Department of Commerce.

Dyfyniad Arddull Chicago

Solar-Geophysical Data. Washington, D.C: U.S. Department of Commerce, 1969.

Dyfyniad MLA

Solar-Geophysical Data. U.S. Department of Commerce, 1969.

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