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.
Čikaški stil citiranja (17. izdanje)Friedrich, Dorothee, i Wolfgang Heckmann. Aids in Europe - the Behavioural Aspect: Dorothee Friedrich ; Wolfgang Heckmann (eds.). [Conference Organized by Robert-Koch-Institut, AIDS-Zentrum]. Berlin: Sigma, 1995.
MLA način citiranja (8. izdanje)Friedrich, Dorothee, i Wolfgang Heckmann. Aids in Europe - the Behavioural Aspect: Dorothee Friedrich ; Wolfgang Heckmann (eds.). [Conference Organized by Robert-Koch-Institut, AIDS-Zentrum]. Sigma, 1995.
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