Gaya APA
PALMER, R, E. et al (2015).
The prevalence of problem opioid use in patients receiving chronic opioid therapy .
Washington, DC:
IASP.
Gaya MLA
PALMER, Roy, E.. et al.
"The prevalence of problem opioid use in patients receiving chronic opioid therapy".
Washington, DC:
IASP,
2015.
Artikel.