Dyfyniad APA

Assembly of Mathematical and Physical Sciences (U.S.). Astronomy Survey Committee. (1982). Astronomy and astrophysics for the 1980's. National Academy Press.

Dyfyniad Arddull Chicago

Assembly of Mathematical and Physical Sciences (U.S.). Astronomy Survey Committee. Astronomy and Astrophysics for the 1980's. Washington, D.C.: National Academy Press, 1982.

Dyfyniad MLA

Assembly of Mathematical and Physical Sciences (U.S.). Astronomy Survey Committee. Astronomy and Astrophysics for the 1980's. National Academy Press, 1982.

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