Gaya APA
Purba, Humiras Hardi. (2017).
QUALITY IMPROVEMENT and LEAN SIX SIGMA (Ed. 1).
YOGYAKARTA:
Expert.
Gaya Chicago
Purba, Humiras Hardi.
QUALITY IMPROVEMENT and LEAN SIX SIGMA.
Ed. 1
YOGYAKARTA:
Expert,
2017.
Text.
Gaya MLA
Purba, Humiras Hardi.
QUALITY IMPROVEMENT and LEAN SIX SIGMA.
Ed. 1
YOGYAKARTA:
Expert,
2017.
Text.
Gaya Turabian
Purba, Humiras Hardi.
QUALITY IMPROVEMENT and LEAN SIX SIGMA.
Ed. 1
YOGYAKARTA:
Expert,
2017.
Print.