Παραπομπή APA

Abdul Kalam, A. P. J., & Srijan Pal Singh. (2011). Target 3 billion: Innovative solutions towards sustainable development. Penguin Books, India.

Παραπομπή Chicago Style

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

Παραπομπή MLA

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