Snowball Sampling: A Purposeful Method of Sampling in Qualitative Research
Crossref DOI link: https://doi.org/10.5812/sdme.67670
Published Online: 2017-09-30
Update policy: https://doi.org/10.5555/crossmark_policy
Naderifar, Mahin
Goli, Hamideh
Ghaljaie, Fereshteh