Gaya APA
Sales Insight: Spirit, Strategy, Service. (2017).
Jakarta:
Gramedia Pustaka Utama.
Gaya Chicago
Sales Insight: Spirit, Strategy, Service.
.
Jakarta:
Gramedia Pustaka Utama,
2017.
.
Gaya MLA
Sales Insight: Spirit, Strategy, Service.
.
Jakarta:
Gramedia Pustaka Utama,
2017.
.
Gaya Turabian
Sales Insight: Spirit, Strategy, Service.
Jakarta:
Gramedia Pustaka Utama,
2017.
.