Wolke, D., Waylen, A., Samara, M., Steer, C., Goodman, R., Ford, T., & Lamberts, K. (2009). Selective drop-out in longitudinal studies and non-biased prediction of behaviour disorders. Royal College Of Psychiatrists.

Wolke, Dieter, Andrea Waylen, Muthanna Samara, Colin Steer, Robert Goodman, Tamsin Ford, và Koen Lamberts. Selective Drop-out in Longitudinal Studies and Non-biased Prediction of Behaviour Disorders. Royal College Of Psychiatrists, 2009.

Wolke, Dieter, et al. Selective Drop-out in Longitudinal Studies and Non-biased Prediction of Behaviour Disorders. Royal College Of Psychiatrists, 2009.