APA način citiranja

Zang, J., & Ng, S. W. (2016). Age, period and cohort effects on adult physical activity levels from 1991 to 2011 in China. Int J Behav Nutr Phys Act.

Čikaški stil citiranja

Zang, Jiajie, i Shu Wen Ng. "Age, Period and Cohort Effects On Adult Physical Activity Levels From 1991 to 2011 in China." Int J Behav Nutr Phys Act 2016.

MLA način citiranja

Zang, Jiajie, i Shu Wen Ng. "Age, Period and Cohort Effects On Adult Physical Activity Levels From 1991 to 2011 in China." Int J Behav Nutr Phys Act 2016.