Cita APA (7th ed.)

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

Cita Chicago (17th ed.)

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

Cita MLA (9th ed.)

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