APA

(2016). The new case for gold. New York, New York: Portfolio/Penguin.

Chicago

2016. The new case for gold. New York, New York: Portfolio/Penguin.

Harvard

(2016). The new case for gold. New York, New York: Portfolio/Penguin.

MLA

The new case for gold. New York, New York: Portfolio/Penguin. 2016.