APA aipamena

Gern, J. E., Visness, C. M., Gergen, P. J., Wood, R. A., Bloomberg, G. R., O'Connor, G. T., . . . Busse, W. W. (2009). The Urban Environment and Childhood Asthma (URECA) birth cohort study: Design, methods, and study population. BioMed Central.

Chicago Style aipamena

Gern, James E., et al. The Urban Environment and Childhood Asthma (URECA) Birth Cohort Study: Design, Methods, and Study Population. BioMed Central, 2009.

MLA aipamena

Gern, James E., et al. The Urban Environment and Childhood Asthma (URECA) Birth Cohort Study: Design, Methods, and Study Population. BioMed Central, 2009.