Singh, G. S. (1985). The negative exponential model: A synthesis of rank, gravity, and entropy functions in urban geography. Govind Ballabh Pant Social Science Institute.
Chicagoスタイル(17版)引用形式Singh, Govind Saran. The Negative Exponential Model: A Synthesis of Rank, Gravity, and Entropy Functions in Urban Geography. Allahabad: Govind Ballabh Pant Social Science Institute, 1985.
MLA(8版)引用形式Singh, Govind Saran. The Negative Exponential Model: A Synthesis of Rank, Gravity, and Entropy Functions in Urban Geography. Govind Ballabh Pant Social Science Institute, 1985.
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