Gaya APA
Kartajaya, H., Hardi, E.
(2016).
Grow your sales! Wow your sevice!
.
Jakarta:
Gramedia.
Gaya MLA
Kartajaya, Hermawan., Hardi, Edwin.
"Grow your sales! Wow your sevice!".
Jakarta:
Gramedia,
2016.
Teks.