Johansen-Berg, H. (2001). Bottom-up or top-down?
Chicago Style aipamenaJohansen-Berg, H. Bottom-up or Top-down? 2001.
MLA aipamenaJohansen-Berg, H. Bottom-up or Top-down? 2001.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.
Johansen-Berg, H. (2001). Bottom-up or top-down?
Chicago Style aipamenaJohansen-Berg, H. Bottom-up or Top-down? 2001.
MLA aipamenaJohansen-Berg, H. Bottom-up or Top-down? 2001.