Dyfyniad APA

Field, L. H., & Parker, C. D. (1977). Pertussis outbreak in Austin and Travis County, Texas, 1975.

Dyfyniad Arddull Chicago

Field, L H., and C D. Parker. Pertussis Outbreak in Austin and Travis County, Texas, 1975. 1977.

Dyfyniad MLA

Field, L H., and C D. Parker. Pertussis Outbreak in Austin and Travis County, Texas, 1975. 1977.

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