European Centre for the Co-ordination of Research and Documentation in Social Sciences, United Nations Research Institute for Social Development, Kukliński, A., & Petrella, R. (1972). Growth poles and regional policies: A seminar. Mouton.

European Centre for the Co-ordination of Research and Documentation in Social Sciences, United Nations Research Institute for Social Development, Antoni Kukliński, and Riccardo Petrella. Growth Poles and Regional Policies: A Seminar. The Hague: Mouton, 1972.

European Centre for the Co-ordination of Research and Documentation in Social Sciences, et al. Growth Poles and Regional Policies: A Seminar. Mouton, 1972.