APA Style
Stake, R, E., Gall, J, P. (2018).
The Sage Handbook of Qualitative Research (5).
Amerika:
Sage Publication.
MLA Style
Stake, Robert, E.., Gall, Joyce, P..
"The Sage Handbook of Qualitative Research".
5
Amerika:
Sage Publication,
2018.
Buku PGSD.