Cita APA (7a ed.)

Abdul Kalam, A. P. J., & Singh, S. P. (2011). Target 3 billion: PURA: innovative solutions towards sustainable development. Penguin Books, India.

Cita Chicago Style (17a ed.)

Abdul Kalam, A. P. J., y Srijan Pal Singh. Target 3 Billion: PURA: Innovative Solutions Towards Sustainable Development. New Delhi: Penguin Books, India, 2011.

Cita MLA (8a ed.)

Abdul Kalam, A. P. J., y Srijan Pal Singh. Target 3 Billion: PURA: Innovative Solutions Towards Sustainable Development. Penguin Books, India, 2011.