Gaya APA

Piketty, T., Goldhammer, A. (2014). Capital in the Twenty-First Century . Cambridge, Massachusetts: The Belknap Press of Harvard University Press.

Gaya MLA

Piketty, Thomas., Goldhammer, Arthur. "Capital in the Twenty-First Century". Cambridge, Massachusetts: The Belknap Press of Harvard University Press, 2014. e-book.