Venn, P. H. (1986). Endotracheal intubation: Friend or foe?
Chicago Style aipamenaVenn, P Hex. Endotracheal Intubation: Friend or Foe? 1986.
MLA aipamenaVenn, P Hex. Endotracheal Intubation: Friend or Foe? 1986.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.