Dyfyniad APA

Research in Astronomy and Astrophysics. IOPscience.

Dyfyniad Arddull Chicago

Research in Astronomy and Astrophysics. IOPscience.

Dyfyniad MLA

Research in Astronomy and Astrophysics. IOPscience.

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