Abler, R., & Abler, R. (1971). Spatial organization: The geographer's view of the world. Prentice-Hall.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रAbler, Renald, और Renald;Adams Abler. Spatial Organization: The Geographer's View of the World. Prentice-Hall, 1971.
एमएलए (9वां संस्करण) प्रशस्ति पत्रAbler, Renald, और Renald;Adams Abler. Spatial Organization: The Geographer's View of the World. Prentice-Hall, 1971.
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