Weber, R. P. (1990). Basic content analysis (2nd ed.). Sage Publications.
Lua i Stíl Chicago (17ú heag.)Weber, Robert Philip. Basic Content Analysis. 2nd ed. Newbury Park, Calif: Sage Publications, 1990.
Lua MLA (9ú heag.)Weber, Robert Philip. Basic Content Analysis. 2nd ed. Sage Publications, 1990.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.