Lua APA (7ú heag.)
Blough, G. O., & Schwartz, J. (1990). Elementary school science and how to teach it (8th ed.). Harcourt brace.
Lua i Stíl Chicago (17ú heag.)
Blough, Glenn O., agus Julius Schwartz. Elementary School Science and How to Teach It. 8th ed. Philadelphia: Harcourt brace, 1990.
Lua MLA (9ú heag.)
Blough, Glenn O., agus Julius Schwartz. Elementary School Science and How to Teach It. 8th ed. Harcourt brace, 1990.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.