KONCELIK, J. A. (1982). Aging and the product environment ed. 1. Huchinson Ross.
Lua i Stíl Chicago (17ú heag.)KONCELIK, Joseph A. Aging and the Product Environment Ed. 1. Struodsburg: Huchinson Ross, 1982.
Lua MLA (9ú heag.)KONCELIK, Joseph A. Aging and the Product Environment Ed. 1. Huchinson Ross, 1982.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.