Lua APA (7ú heag.)
Bernstein, L., Schachter, M., & Winkler, A. (2004). Earth and space. Globe Fearon.
Lua i Stíl Chicago (17ú heag.)
Bernstein, Leonard, Martin Schachter, agus Alan Winkler. Earth and Space. United State: Globe Fearon, 2004.
Lua MLA (9ú heag.)
Bernstein, Leonard, et al. Earth and Space. Globe Fearon, 2004.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.