Singer, P. (2011). What Should a Billionaire Give - and What Should You? Giving well, 13-25.
Style de citation Chicago (17e éd.)Singer, Peter. "What Should a Billionaire Give - and What Should You?" Giving Well 2011: 13-25.
Style de citation MLA (8e éd.)Singer, Peter. "What Should a Billionaire Give - and What Should You?" Giving Well, 2011, pp. 13-25.
Attention : ces citations peuvent ne pas être correctes à 100%.