APA-čujuhus (7. p.)
BALL, J., & ROSS, A. (1991). THE EFFECTIVENESS OF METHADONE MAINTENANCE TREATMENT. SPRINGER-VERLAG.
Chicago-čujuhus (17. p.)
BALL, J.C, juo A. ROSS. THE EFFECTIVENESS OF METHADONE MAINTENANCE TREATMENT. NUEVA YORK: SPRINGER-VERLAG, 1991.
MLA-čujuhus (9. p.)
BALL, J.C, juo A. ROSS. THE EFFECTIVENESS OF METHADONE MAINTENANCE TREATMENT. SPRINGER-VERLAG, 1991.
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