Gaya APA
Evaluation Studies, Review Annual vol. 12. (1987).
California:
Sage Publication.
Gaya Chicago
Evaluation Studies, Review Annual vol. 12.
Kesatu.
California:
Sage Publication,
1987.
Text.
Gaya MLA
Evaluation Studies, Review Annual vol. 12.
Kesatu.
California:
Sage Publication,
1987.
Text.
Gaya Turabian
Evaluation Studies, Review Annual vol. 12.
California:
Sage Publication,
1987.
Print.