Gaya APA
Effective evaluation. (1980).
San francisco:
Jossey Bass Publishers.
Gaya Chicago
Effective evaluation.
.
San francisco:
Jossey Bass Publishers,
1980.
Buku.
Gaya MLA
Effective evaluation.
.
San francisco:
Jossey Bass Publishers,
1980.
Buku.
Gaya Turabian
Effective evaluation.
San francisco:
Jossey Bass Publishers,
1980.
Buku.