Cita APA (7a ed.)

Friedrich, D. (1995). Aids in Europe - the behavioural aspect. Sigma.

Cita Chicago Style (17a ed.)

Friedrich, Dorothee. Aids in Europe - the Behavioural Aspect. Berlin: Sigma, 1995.

Cita MLA (8a ed.)

Friedrich, Dorothee. Aids in Europe - the Behavioural Aspect. Sigma, 1995.