APA-viite (7. p.)
FRIEDMAN, S., & ET AL. (1999). NETWORKS AND HIV RISK: AN INTRODUCTION TO SOCIAL NETWORK ANALYSIS FOR HARM REDUCTIONISTS.
Chicago-viite (17. p.)
FRIEDMAN, S.R, ja ET AL. NETWORKS AND HIV RISK: AN INTRODUCTION TO SOCIAL NETWORK ANALYSIS FOR HARM REDUCTIONISTS. 1999.
MLA-viite (9. p.)
FRIEDMAN, S.R, ja ET AL. NETWORKS AND HIV RISK: AN INTRODUCTION TO SOCIAL NETWORK ANALYSIS FOR HARM REDUCTIONISTS. 1999.
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