Gaya APA
Jonson, R, B., Christensen, L. (2017).
Educational Research : Quantitative, Qualitative, and Mixed Approaches (6).
Los Angeles:
SAGE.
Gaya MLA
Jonson, R., Burke., Christensen, Larry.
"Educational Research : Quantitative, Qualitative, and Mixed Approaches".
6
Los Angeles:
SAGE,
2017.
Text.