Dwivedi, D. N. (2026). Principles of economics (Second edition.). Vikas Publishing House Pvt. Ltd..
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芝加哥风格引文
Dwivedi, D. N. Principles of Economics. Second edition. New Delhi: Vikas Publishing House Pvt. Ltd., 2026.
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MLA引文
Dwivedi, D. N. Principles of Economics. Second edition. Vikas Publishing House Pvt. Ltd., 2026.
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警告：这些引文格式不一定是100％准确.