Lua APA (7ú heag.)
ebrary, Inc, & Levinson, R. (1994). Teaching science. Routledge in association with the Open University.
Lua i Stíl Chicago (17ú heag.)
ebrary, Inc, agus Ralph Levinson. Teaching Science. London ; New York: Routledge in association with the Open University, 1994.
Lua MLA (9ú heag.)
ebrary, Inc, agus Ralph Levinson. Teaching Science. Routledge in association with the Open University, 1994.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.