Gaya APA
Greenwood, D, J., Levin, M. (1998).
INTRODUCTION TO ACTION RESEARCH (Cetakan 1).
California:
Sage Publications, Inc.
Gaya MLA
Greenwood, Davydd, J.., Levin, Morten.
"INTRODUCTION TO ACTION RESEARCH".
Cetakan 1
California:
Sage Publications, Inc,
1998.
Text.