Gallagher James J. (1969). A summary research in science education for the years of 1968-69. ERIC.
Lua i Stíl Chicago (17ú heag.)Gallagher James J. A Summary Research in Science Education for the Years of 1968-69. Ohio, Estados Unidos: ERIC, 1969.
Lua MLA (9ú heag.)Gallagher James J. A Summary Research in Science Education for the Years of 1968-69. ERIC, 1969.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.