Miles, B., & Seabrooke, W. (1977). Recreational land management.
Lua i Stíl Chicago (17ú heag.)Miles, Barry, agus W. Seabrooke. Recreational Land Management. 1977.
Lua MLA (9ú heag.)Miles, Barry, agus W. Seabrooke. Recreational Land Management. 1977.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.