Dyfyniad APA

Rao, J. K. (2007). Looking Back and Looking Forward. Centers for Disease Control and Prevention.

Dyfyniad Arddull Chicago

Rao, Jaya K. Looking Back and Looking Forward. Centers for Disease Control and Prevention, 2007.

Dyfyniad MLA

Rao, Jaya K. Looking Back and Looking Forward. Centers for Disease Control and Prevention, 2007.

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