Cita APA (7a ed.)

Helder, C. (2019). How to influence people: Motivate, inspire and get the results you want (2nd edition.). Wiley.

Cita Chicago Style (17a ed.)

Helder, Chris. How to Influence People: Motivate, Inspire and Get the Results You Want. 2nd edition. Milton, Queensland, Australia: Wiley, 2019.

Cita MLA (9a ed.)

Helder, Chris. How to Influence People: Motivate, Inspire and Get the Results You Want. 2nd edition. Wiley, 2019.