APA (7th ed.) Citation

Sen & Amartya. (2009). The Idea of Justice. Allen Lane / Penguin Books.

Chicago Style (17th ed.) Citation

Sen and Amartya. The Idea of Justice. London: Allen Lane / Penguin Books, 2009.

MLA (9th ed.) Citation

Sen and Amartya. The Idea of Justice. Allen Lane / Penguin Books, 2009.