Burford G. et al. (2013). "Field trials of a noveltoolkitfor evaluating 'intangible' values-related dimensions of projects". Evaluation and Program Planning 36 1–14.
Burford G. et al. (2013). "Field trials of a noveltoolkitfor evaluating 'intangible' values-related dimensions of projects". Evaluation and Program Planning 36 1–14.