APA (7th ed.) Citation

Singer, P. (2011). What Should a Billionaire Give - and What Should You? Giving well, 13-25.

Chicago Style (17th ed.) Citation

Singer, Peter. "What Should a Billionaire Give - and What Should You?" Giving Well 2011: 13-25.

MLA (8th ed.) Citation

Singer, Peter. "What Should a Billionaire Give - and What Should You?" Giving Well, 2011, pp. 13-25.

Warning: These citations may not always be 100% accurate.