Dyfyniad APA
ebrary, Inc, Stratton, K. R., Howe, C. J., & Johnston, R. B. (1994). Adverse events associated with childhood vaccines: Evidence bearing on causality. National Academy Press.
Dyfyniad Arddull Chicago
ebrary, Inc, Kathleen R. Stratton, Cynthia J. Howe, and Richard B. Johnston. Adverse Events Associated with Childhood Vaccines: Evidence Bearing on Causality. Washington, D.C.: National Academy Press, 1994.
Dyfyniad MLA
ebrary, Inc, et al. Adverse Events Associated with Childhood Vaccines: Evidence Bearing on Causality. National Academy Press, 1994.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.