Owen, C. G., Nightingale, C. M., Rudnicka, A. R., van Sluijs, E. M. F., Ekelund, U., Cook, D. G., & Whincup, P. H. (2012). Travel to School and Physical Activity Levels in 9–10 Year-Old UK Children of Different Ethnic Origin; Child Heart and Health Study in England (CHASE). Public Library of Science.

Owen, Christopher G., Claire M. Nightingale, Alicja R. Rudnicka, Esther M. F. van Sluijs, Ulf Ekelund, Derek G. Cook, and Peter H. Whincup. Travel to School and Physical Activity Levels in 9–10 Year-Old UK Children of Different Ethnic Origin; Child Heart and Health Study in England (CHASE). Public Library of Science, 2012.

Owen, Christopher G., et al. Travel to School and Physical Activity Levels in 9–10 Year-Old UK Children of Different Ethnic Origin; Child Heart and Health Study in England (CHASE). Public Library of Science, 2012.