Dyfyniad APA
VAN ESSEN, G., & ET AL. (1998). WHY DO HEALTHY ELDERLY PEOPLE FAIL TO COMPLY WITH INFLUENZA VACCINATION?
Dyfyniad Arddull Chicago
VAN ESSEN, G.A, and ET AL. WHY DO HEALTHY ELDERLY PEOPLE FAIL TO COMPLY WITH INFLUENZA VACCINATION? 1998.
Dyfyniad MLA
VAN ESSEN, G.A, and ET AL. WHY DO HEALTHY ELDERLY PEOPLE FAIL TO COMPLY WITH INFLUENZA VACCINATION? 1998.
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