Gaya APA
Prof.Drs. Z.A. Achmady, MPA.. (1997).
Energi .
Cambridge, Mass:
PPPGT.
Gaya Chicago
Prof.Drs. Z.A. Achmady, MPA..
Energi.
Cambridge, Mass:
PPPGT,
1997.
Text.
Gaya MLA
Prof.Drs. Z.A. Achmady, MPA..
Energi.
Cambridge, Mass:
PPPGT,
1997.
Text.
Gaya Turabian
Prof.Drs. Z.A. Achmady, MPA..
Energi.
Cambridge, Mass:
PPPGT,
1997.
Print.