Dyfyniad APA

Chiappini, E., Stival, A., Galli, L., & de Martino, M. (2013). Pertussis re-emergence in the post-vaccination era. BioMed Central.

Dyfyniad Arddull Chicago

Chiappini, Elena, Alessia Stival, Luisa Galli, and Maurizio de Martino. Pertussis Re-emergence in the Post-vaccination Era. BioMed Central, 2013.

Dyfyniad MLA

Chiappini, Elena, Alessia Stival, Luisa Galli, and Maurizio de Martino. Pertussis Re-emergence in the Post-vaccination Era. BioMed Central, 2013.

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