Gaya APA
Patton, Michael Quinn. (1990).
Qualitative evaluation and research methods (2nd Edition) .
USA:
Sage Publication.
Gaya Chicago
Patton, Michael Quinn.
Qualitative evaluation and research methods (2nd Edition).
USA:
Sage Publication,
1990.
Text.
Gaya MLA
Patton, Michael Quinn.
Qualitative evaluation and research methods (2nd Edition).
USA:
Sage Publication,
1990.
Text.
Gaya Turabian
Patton, Michael Quinn.
Qualitative evaluation and research methods (2nd Edition).
USA:
Sage Publication,
1990.
Print.