APA aipamena

Leung, L. T., Ho, S. Y., Wang, M. P., Lo, W. S., & Lam, T. H. (2015). Exposure to secondhand smoke from neighbours and respiratory symptoms in never-smoking adolescents in Hong Kong: A cross-sectional study. BMJ Open.

Chicago Style aipamena

Leung, Lok Tung, Sai Yin Ho, Man Ping Wang, Wing Sze Lo, and Tai Hing Lam. "Exposure to Secondhand Smoke From Neighbours and Respiratory Symptoms in Never-smoking Adolescents in Hong Kong: A Cross-sectional Study." BMJ Open 2015.

MLA aipamena

Leung, Lok Tung, et al. "Exposure to Secondhand Smoke From Neighbours and Respiratory Symptoms in Never-smoking Adolescents in Hong Kong: A Cross-sectional Study." BMJ Open 2015.