APA Style
Smeltzer, S, C. et al (2019).
Challenges to Studying Illicit Drug Users (Volume 51, Issue 4).
Malden:
Wiley-Blackwell.
MLA Style
Smeltzer, Suzanne, C.. et al.
"Challenges to Studying Illicit Drug Users".
Volume 51, Issue 4
Malden:
Wiley-Blackwell,
2019.
Jurnal.