Gupta, D. P. P. (2000). Tensors and differential geometry. Pragati.
Tohutoru Kātū Chicago (17th ed.)Gupta, Dr. P. P. Tensors and Differential Geometry. Merrut: Pragati, 2000.
Tohutoro MLA (9th ed.)Gupta, Dr. P. P. Tensors and Differential Geometry. Pragati, 2000.
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