Dyfyniad APA

(1991). Adverse events temporally associated with immunizing agents: 1989 report.

Dyfyniad Arddull Chicago

Adverse Events Temporally Associated With Immunizing Agents: 1989 Report. 1991.

Dyfyniad MLA

Adverse Events Temporally Associated With Immunizing Agents: 1989 Report. 1991.

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