Lua APA (7ú heag.)
Vockell, E. L. (1983). Educational research. Macmillan.
Lua i Stíl Chicago (17ú heag.)
Vockell, Edward L. Educational Research. New York: Macmillan, 1983.
Lua MLA (9ú heag.)
Vockell, Edward L. Educational Research. Macmillan, 1983.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.