Cita APA (7a ed.)

Helmer, H., & Hastings, R. (2016). 7 powers: The foundations of business strategy. Deep Strategy LLC.

Cita Chicago Style (17a ed.)

Helmer, Hamilton, y Reed Hastings. 7 Powers: The Foundations of Business Strategy. Los Altos, CA: Deep Strategy LLC, 2016.

Cita MLA (9a ed.)

Helmer, Hamilton, y Reed Hastings. 7 Powers: The Foundations of Business Strategy. Deep Strategy LLC, 2016.