APA-viite (7. p.)
LIFRAK, P., & ET AL. (1998). RELATIONSHIP OF PERCEIVED COMPETENCIES, PERCEIVED SOCIAL SUPPORT, AND GENDER TO SUBSTANCE USE IN YOUNG ADOLESCENTS.
Chicago-viite (17. p.)
LIFRAK, P.D, ja ET AL. RELATIONSHIP OF PERCEIVED COMPETENCIES, PERCEIVED SOCIAL SUPPORT, AND GENDER TO SUBSTANCE USE IN YOUNG ADOLESCENTS. 1998.
MLA-viite (9. p.)
LIFRAK, P.D, ja ET AL. RELATIONSHIP OF PERCEIVED COMPETENCIES, PERCEIVED SOCIAL SUPPORT, AND GENDER TO SUBSTANCE USE IN YOUNG ADOLESCENTS. 1998.
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