Clague, E., Kramer, L., & Palli, B. (1971). The aging worker and the union: Employment and retirement of middle-aged and older workers. Praeger.
Lua i Stíl Chicago (17ú heag.)Clague, Ewan, Leo Kramer, agus Balraj Palli. The Aging Worker and the Union: Employment and Retirement of Middle-aged and Older Workers. New York: Praeger, 1971.
Lua MLA (9ú heag.)Clague, Ewan, et al. The Aging Worker and the Union: Employment and Retirement of Middle-aged and Older Workers. Praeger, 1971.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.