Dyfyniad APA

National Academy of Sciences (U.S.). (2005). Biographical memoirs. National Academy of Sciences.

Dyfyniad Arddull Chicago

National Academy of Sciences (U.S.). Biographical Memoirs. Washington: National Academy of Sciences, 2005.

Dyfyniad MLA

National Academy of Sciences (U.S.). Biographical Memoirs. National Academy of Sciences, 2005.

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