Cita APA (7a ed.)

Doblelli Rolf. (2013). Art of Thinking Clearly. Sceptre.

Cita Chicago Style (17a ed.)

Doblelli Rolf. Art of Thinking Clearly. UK: Sceptre, 2013.

Cita MLA (9a ed.)

Doblelli Rolf. Art of Thinking Clearly. Sceptre, 2013.