Walford, P. A. (1968). Deaths from asthma. BMJ Group.
Citação norma ChicagoWalford, P. A. Deaths From Asthma. BMJ Group, 1968.
MLA CitationWalford, P. A. Deaths From Asthma. BMJ Group, 1968.
Advarsel: Disse citationer er muligvist ikke 100% nøjagtige.