APA-referens (7:e uppl.)

Webber, M. J. (1984). Explanation, prediction and planning: The Lowry model. Pion.

Chicago-referens (17:e uppl.)

Webber, Michael John. Explanation, Prediction and Planning: The Lowry Model. London: Pion, 1984.

MLA-referens (9:e uppl.)

Webber, Michael John. Explanation, Prediction and Planning: The Lowry Model. Pion, 1984.