Burrough, P. A., Frank, A. U., & Burrough, P. A. (1996). Geographic objects with indeterminate boundaries. London Bristol, PA: Taylor & Francis.
Παραπομπή Chicago StyleBurrough, P. A., Andrew U. Frank, and Peter A. Burrough. Geographic Objects With Indeterminate Boundaries. London Bristol, PA: Taylor & Francis, 1996.
Παραπομπή MLABurrough, P. A., Andrew U. Frank, and Peter A. Burrough. Geographic Objects With Indeterminate Boundaries. London Bristol, PA: Taylor & Francis, 1996.
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