Dyfyniad APA

American Astronomical Society. (1993). The American Astronomical Society CD-ROM series. Washington, DC: American Astronomical Society.

Dyfyniad Arddull Chicago

American Astronomical Society. The American Astronomical Society CD-ROM Series. Washington, DC: American Astronomical Society, 1993.

Dyfyniad MLA

American Astronomical Society. The American Astronomical Society CD-ROM Series. Washington, DC: American Astronomical Society, 1993.

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