Gaya APA
Tonga, U. (2010).
Proactive attitude building during on the job training at wesley international school in preparation to entering the professional world (CD) .
Malang, Jatim:
UNMER.
Gaya MLA
Tonga, Umbu.
"Proactive attitude building during on the job training at wesley international school in preparation to entering the professional world (CD)".
Malang, Jatim:
UNMER,
2010.
CD-ROM.