APA (7th ed.) Citation

Hoelzer, J., Stiller-Winkler, R., Lemm, F., Witzke, N., Ewers, U., Idel, H., & Wilhelm, M. (2002). Prevalence of respiratory symptoms in school children and salivary IgA – an epidemiological study in a rural area of Northrhine-Westphalia, Germany. International journal of hygiene and environmental health, 205(4), 309-319. https://doi.org/10.1078/1438-4639-00154

Chicago Style (17th ed.) Citation

Hoelzer, Juergen, Renate Stiller-Winkler, Friederike Lemm, Nicole Witzke, Ulrich Ewers, Helga Idel, and Michael Wilhelm. "Prevalence of Respiratory Symptoms in School Children and Salivary IgA – an Epidemiological Study in a Rural Area of Northrhine-Westphalia, Germany." International Journal of Hygiene and Environmental Health 205, no. 4 (2002): 309-319. https://doi.org/10.1078/1438-4639-00154.

MLA (9th ed.) Citation

Hoelzer, Juergen, et al. "Prevalence of Respiratory Symptoms in School Children and Salivary IgA – an Epidemiological Study in a Rural Area of Northrhine-Westphalia, Germany." International Journal of Hygiene and Environmental Health, vol. 205, no. 4, 2002, pp. 309-319, https://doi.org/10.1078/1438-4639-00154.