Gaya APA

CICERO, T, J. et al (2013). Factors influencing the selection of hydrocodone and oxycodone as primary opioids in substance abusers seeking treatment in The United States . Washington: IASP.

Gaya MLA

CICERO, Theodore, J. et al. "Factors influencing the selection of hydrocodone and oxycodone as primary opioids in substance abusers seeking treatment in The United States". Washington: IASP, 2013. Artikel.