Gunnarsson, J. (1977). Production systems and hierarchies of centres: The relationship between spatial and economic structures. Nijhoff Social Sciences Division : [Besteladres], Stenfert Kroese.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रGunnarsson, Jan. Production Systems and Hierarchies of Centres: The Relationship Between Spatial and Economic Structures. Leiden: Nijhoff Social Sciences Division : [Besteladres], Stenfert Kroese, 1977.
एमएलए (8वां संस्करण) प्रशस्ति पत्रGunnarsson, Jan. Production Systems and Hierarchies of Centres: The Relationship Between Spatial and Economic Structures. Nijhoff Social Sciences Division : [Besteladres], Stenfert Kroese, 1977.
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