Cita APA (7th ed.)

ebrary, Inc, & Álvarez, J. T. (2011). Social security: Background, issues and proposals. Nova Science Publishers.

Cita Chicago (17th ed.)

ebrary, Inc, i Jacob T. Álvarez. Social Security: Background, Issues and Proposals. New York: Nova Science Publishers, 2011.

Cita MLA (9th ed.)

ebrary, Inc, i Jacob T. Álvarez. Social Security: Background, Issues and Proposals. Nova Science Publishers, 2011.