Não informado. (2002). Parks & Recreation. American Institute of Park Executives.
Lua i Stíl Chicago (17ú heag.)Não informado. Parks & Recreation. Wheeling, Ill: American Institute of Park Executives, 2002.
Lua MLA (8ú heag.)Não informado. Parks & Recreation. American Institute of Park Executives, 2002.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.