Ayres, J., Miles, J., & Barnes, P. (1998). Brittle asthma. BMJ Group.
Chicago Style aipamenaAyres, J., J. Miles, and P. Barnes. Brittle Asthma. BMJ Group, 1998.
MLA aipamenaAyres, J., J. Miles, and P. Barnes. Brittle Asthma. BMJ Group, 1998.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.