APA (7e ed.) Bronvermelding
Hopkinson, N., & et al. (2021). Current smoking and COVID-19 risk: Results from a population symptom app in over 2.4 million people.
Chicago (17e ed.) Bronvermelding
Hopkinson, N.S, en et al. Current Smoking and COVID-19 Risk: Results from a Population Symptom App in over 2.4 Million People. 2021.
MLA (9e ed.) Bronvermelding
Hopkinson, N.S, en et al. Current Smoking and COVID-19 Risk: Results from a Population Symptom App in over 2.4 Million People. 2021.
Let op: Deze citaties zijn niet altijd 100% accuraat.