Gaya APA
Evaluation studies review annual, volume 9. (1984).
Beverly Hills:
Sage.
Gaya Chicago
Evaluation studies review annual, volume 9.
text.
Beverly Hills:
Sage,
1984.
Tesis.
Gaya MLA
Evaluation studies review annual, volume 9.
text.
Beverly Hills:
Sage,
1984.
Tesis.
Gaya Turabian
Evaluation studies review annual, volume 9.
Beverly Hills:
Sage,
1984.
Tesis.