Gaya APA

Suchaeri, H, S., Wicaksono, D. (2011). Incredible and impression service : 156 kebiasaan efektif orang sales dan customer service . Yogyakarta: Shira Media.

Gaya MLA

Suchaeri, Heri, Smile., Wicaksono, Dimas. "Incredible and impression service : 156 kebiasaan efektif orang sales dan customer service". Yogyakarta: Shira Media, 2011. Text.