Cita APA (7a ed.)

Ries Al. (2017). Positioning: The Battle For Your Mind (20.). McGraw Hill Education.

Cita Chicago Style (17a ed.)

Ries Al. Positioning: The Battle For Your Mind. 20. Chennai: McGraw Hill Education, 2017.

Cita MLA (9a ed.)

Ries Al. Positioning: The Battle For Your Mind. 20. McGraw Hill Education, 2017.