Friedrich, D., & Heckmann, W. (1995). Aids in Europe - the behavioural aspect: Dorothee Friedrich ; Wolfgang Heckmann (eds.). [Conference organized by Robert-Koch-Institut, AIDS-Zentrum]. Sigma.
Lua i Stíl Chicago (17ú heag.)Friedrich, Dorothee, agus Wolfgang Heckmann. Aids in Europe - the Behavioural Aspect: Dorothee Friedrich ; Wolfgang Heckmann (eds.). [Conference Organized by Robert-Koch-Institut, AIDS-Zentrum]. Berlin: Sigma, 1995.
Lua MLA (8ú heag.)Friedrich, Dorothee, agus Wolfgang Heckmann. Aids in Europe - the Behavioural Aspect: Dorothee Friedrich ; Wolfgang Heckmann (eds.). [Conference Organized by Robert-Koch-Institut, AIDS-Zentrum]. Sigma, 1995.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.