Gaya APA
Needs assessment: concept and application. (1979).
New Jersey:
Educational Technology Publications Inc..
Gaya Chicago
Needs assessment: concept and application.
.
New Jersey:
Educational Technology Publications Inc.,
1979.
Buku.
Gaya MLA
Needs assessment: concept and application.
.
New Jersey:
Educational Technology Publications Inc.,
1979.
Buku.
Gaya Turabian
Needs assessment: concept and application.
New Jersey:
Educational Technology Publications Inc.,
1979.
Buku.