Karplus, R., & Thier, H. (1967). A new look at elementary school science: Science curriculum improvement study. Rand McNally.
Lua i Stíl Chicago (17ú heag.)Karplus, Robert, agus H.D Thier. A New Look at Elementary School Science: Science Curriculum Improvement Study. Chicago: Rand McNally, 1967.
Lua MLA (9ú heag.)Karplus, Robert, agus H.D Thier. A New Look at Elementary School Science: Science Curriculum Improvement Study. Rand McNally, 1967.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.