Gaya APA
Gall, J, P. (2014).
Applying Education Research: How to Read, Do, and Use Research to Solve Problems of Practice (7th Ed.).
London:
Elsevier.
Gaya MLA
Gall, Joyce, P..
"Applying Education Research: How to Read, Do, and Use Research to Solve Problems of Practice".
7th Ed.
London:
Elsevier,
2014.
Text.