APA način citiranja

Piirtola, M., Kaprio, J., & Ropponen, A. (2014). A Study of Sedentary Behaviour in the Older Finnish Twin Cohort: A Cross Sectional Analysis. Hindawi Publishing Corporation.

Čikaški stil citiranja

Piirtola, Maarit, Jaakko Kaprio, i Annina Ropponen. A Study of Sedentary Behaviour in the Older Finnish Twin Cohort: A Cross Sectional Analysis. Hindawi Publishing Corporation, 2014.

MLA način citiranja

Piirtola, Maarit, Jaakko Kaprio, i Annina Ropponen. A Study of Sedentary Behaviour in the Older Finnish Twin Cohort: A Cross Sectional Analysis. Hindawi Publishing Corporation, 2014.