APA aipamena

Kettner, S., Kobel, S., Fischbach, N., Drenowatz, C., Dreyhaupt, J., Wirt, T., . . . Steinacker, J. M. (2013). Objectively determined physical activity levels of primary school children in south-west Germany. BioMed Central.

Chicago Style aipamena

Kettner, Sarah, Susanne Kobel, Nanette Fischbach, Clemens Drenowatz, Jens Dreyhaupt, Tamara Wirt, Benjamin Koch, and Jürgen Michael Steinacker. Objectively Determined Physical Activity Levels of Primary School Children in South-west Germany. BioMed Central, 2013.

MLA aipamena

Kettner, Sarah, et al. Objectively Determined Physical Activity Levels of Primary School Children in South-west Germany. BioMed Central, 2013.