Gaya APA

PH.D,, K, Y. (). DESIGN FOR SIX SIGMA FOR SERVICE (-). Palangkaraya: Mc Graw Hill _2.

Gaya MLA

PH.D,, KAI, YANG,. "DESIGN FOR SIX SIGMA FOR SERVICE". - Palangkaraya: Mc Graw Hill _2, . Buku Teks.