1935- Pahl, R. E. (1965). Urbs in rure: The metropolitan fringe in Hertfordshire. London School of Economics and Political Science.
Chicago-referens (17:e uppl.)1935- Pahl, R. E. Urbs in Rure: The Metropolitan Fringe in Hertfordshire. [London: London School of Economics and Political Science, 1965.
MLA-referens (8:e uppl.)1935- Pahl, R. E. Urbs in Rure: The Metropolitan Fringe in Hertfordshire. London School of Economics and Political Science, 1965.
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