Bennie, F. (1977). Learning centers ; development and operation. Educational Technology Publications.
Lua i Stíl Chicago (17ú heag.)Bennie, Frances. Learning Centers ; Development and Operation. Englewood Cliffs, N.J.: Educational Technology Publications, 1977.
Lua MLA (8ú heag.)Bennie, Frances. Learning Centers ; Development and Operation. Educational Technology Publications, 1977.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.