Cita APA (7th ed.)

Graham, P. (2012). The present: Paul Graham (First edition.). Mack.

Cita Chicago (17th ed.)

Graham, Paul. The Present: Paul Graham. First edition. [London]: Mack, 2012.

Cita MLA (8th ed.)

Graham, Paul. The Present: Paul Graham. First edition. Mack, 2012.