APA-čujuhus (7. p.)
FELDKAMP, R. (1999). PERU AND BOLIVIA ARE COMMENDED FOR ANTIDRUG EFFORTS; COLOMBIA DECIDEDLY IS NOT.
Chicago-čujuhus (17. p.)
FELDKAMP, R.H. PERU AND BOLIVIA ARE COMMENDED FOR ANTIDRUG EFFORTS; COLOMBIA DECIDEDLY IS NOT. 1999.
MLA-čujuhus (9. p.)
FELDKAMP, R.H. PERU AND BOLIVIA ARE COMMENDED FOR ANTIDRUG EFFORTS; COLOMBIA DECIDEDLY IS NOT. 1999.
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