APA aipamena

Robertson, A. H. (1992). Social security: What every taxpayer should know. Retirement Policy Institute.

Chicago Style aipamena

Robertson, A. Haeworth. Social Security: What Every Taxpayer Should Know. Washington, D.C: Retirement Policy Institute, 1992.

MLA aipamena

Robertson, A. Haeworth. Social Security: What Every Taxpayer Should Know. Retirement Policy Institute, 1992.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.