Cita APA (7th ed.)

Stansberry, P. (2015). America 2020: The survival blueprint. Stansberry Research.

Cita Chicago (17th ed.)

Stansberry, Porter. America 2020: The Survival Blueprint. USA: Stansberry Research, 2015.

Cita MLA (9th ed.)

Stansberry, Porter. America 2020: The Survival Blueprint. Stansberry Research, 2015.

Atenció: Aquestes cites poden no estar 100% correctes.