Abdul Kalam, A. P. J., & Singh, S. P. (2011). Target 3 billion: PURA: innovative solutions towards sustainable development. Penguin Books, India.
Citace podle Chicago (17th ed.)Abdul Kalam, A. P. J., a Srijan Pal Singh. Target 3 Billion: PURA: Innovative Solutions Towards Sustainable Development. New Delhi: Penguin Books, India, 2011.
Citace podle MLA (8th ed.)Abdul Kalam, A. P. J., a Srijan Pal Singh. Target 3 Billion: PURA: Innovative Solutions Towards Sustainable Development. Penguin Books, India, 2011.
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