Gaya APA
GREGORIUS, Agung. (2012).
Extreme Productivity .
Jakarta:
Elex Media Komputindo.
Gaya Chicago
GREGORIUS, Agung.
Extreme Productivity.
Jakarta:
Elex Media Komputindo,
2012.
Text.
Gaya MLA
GREGORIUS, Agung.
Extreme Productivity.
Jakarta:
Elex Media Komputindo,
2012.
Text.
Gaya Turabian
GREGORIUS, Agung.
Extreme Productivity.
Jakarta:
Elex Media Komputindo,
2012.
Print.