Gray, L. and Leyland, A. H. (2016) General health and multiple conditions. In: Campbell-Jack, D., Hinchliffe, S. and Rutherford, L. (eds.) The Scottish Health Survey 2015. Volume 1: Main Report. The Scottish Government Health Directorate, pp. 49-67. ISBN 9781786524614

Gray, L. and Leyland, A. H. (2016) Alcohol consumption. In: Campbell-Jack, D., Hinchliffe, S. and Rutherford, L. (eds.) The Scottish Health Survey 2015. Volume 1: Main Report. The Scottish Government Health Directorate, pp. 83-113. ISBN 9781786524614

Gray, L. and Leyland, A. H. (2016) Smoking. In: Campbell-Jack, D., Hinchliffe, S. and Rutherford, L. (eds.) The Scottish Health Survey 2015. Volume 1: Main Report. The Scottish Government Health Directorate, pp. 115-141. ISBN 9781786524614