Dyfyniad APA

American Biographical Institute. (2003). Great minds of the 21st century. American Biographical Institute.

Dyfyniad Arddull Chicago

American Biographical Institute. Great Minds of the 21st Century. Raleigh, N.C: American Biographical Institute, 2003.

Dyfyniad MLA

American Biographical Institute. Great Minds of the 21st Century. American Biographical Institute, 2003.

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