Seefeldt, D. (1980). Stress was tun ? Verlag Tribüne.
Čikaški stil citiranja (17. izdanje)Seefeldt, Dieter. Stress Was Tun ? Berlin: Verlag Tribüne, 1980.
MLA način citiranja (8. izdanje)Seefeldt, Dieter. Stress Was Tun ? Verlag Tribüne, 1980.
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