ABLER, R. (1972). Spatial organization: The geographer's view of of the world. Prentice-Hall.
Chicago-viite (17. p.)ABLER, Ronald. Spatial Organization: The Geographer's View of of the World. London: Prentice-Hall, 1972.
MLA-viite (9. p.)ABLER, Ronald. Spatial Organization: The Geographer's View of of the World. Prentice-Hall, 1972.
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