Salkind, N. J. (2000). Exploring research (4th ed.). Prentice Hall.
Lua i Stíl Chicago (17ú heag.)Salkind, Neil J. Exploring Research. 4th ed. Upper Saddle River, New Jersey: Prentice Hall, 2000.
Lua MLA (9ú heag.)Salkind, Neil J. Exploring Research. 4th ed. Prentice Hall, 2000.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.