Gaya APA
Denzin, N, K., Lincoln, Y, S. (2018).
Sage handbook of qualitative research (4th ed.).
California:
Sage.
Gaya MLA
Denzin, Norman, K.., Lincoln, Yvonna, S..
"Sage handbook of qualitative research".
4th ed.
California:
Sage,
2018.
eBook Kesehatan Masyarakat.