Lua APA (7ú heag.)

Midlarsky, E., & Kahana, E. (1994). Altruism in later life. Sage Publications.

Lua i Stíl Chicago (17ú heag.)

Midlarsky, Elizabeth, agus Eva Kahana. Altruism in Later Life. Thousand Oaks: Sage Publications, 1994.

Lua MLA (8ú heag.)

Midlarsky, Elizabeth, agus Eva Kahana. Altruism in Later Life. Sage Publications, 1994.

Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.