APA (7th ed.) Citation
Keijzer, L., & Imbert, E. (2011). The filter of choice: Filtration method preference among injecting drug users.
Chicago Style (17th ed.) Citation
Keijzer, L., and E. Imbert. The Filter of Choice: Filtration Method Preference Among Injecting Drug Users. 2011.
MLA (9th ed.) Citation
Keijzer, L., and E. Imbert. The Filter of Choice: Filtration Method Preference Among Injecting Drug Users. 2011.
Warning: These citations may not always be 100% accurate.