APA Style

Syukron, Amin, Kholil, Muhammad. (2013). SIX SIGMA: Quality for Business Improvement (1). Yogyakarta: GRAHA ILMU.

Chicago Style

Syukron, Amin, Kholil, Muhammad. SIX SIGMA: Quality for Business Improvement. 1 Yogyakarta: GRAHA ILMU, 2013. Text.

MLA Style

Syukron, Amin, Kholil, Muhammad. SIX SIGMA: Quality for Business Improvement. 1 Yogyakarta: GRAHA ILMU, 2013. Text.

Turabian Style

Syukron, Amin, Kholil, Muhammad. SIX SIGMA: Quality for Business Improvement. 1 Yogyakarta: GRAHA ILMU, 2013. Print.