Cita APA (7a ed.)

Barrios, J. J. (2011). Existence of Non-profit organizations in the United States of America.

Cita Chicago Style (17a ed.)

Barrios, Juan José. Existence of Non-profit Organizations in the United States of America. 2011.

Cita MLA (9a ed.)

Barrios, Juan José. Existence of Non-profit Organizations in the United States of America. 2011.