APA aipamena

(2002). Surviving strategies to cope with the future. PPU-UAJY.

Chicago Style aipamena

Surviving Strategies to Cope with the Future. PPU-UAJY, 2002.

MLA aipamena

Surviving Strategies to Cope with the Future. PPU-UAJY, 2002.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.