Gaya APA
Kurniawan, C.
(2018).
It's Easy ... Building Up a Business
(
Cet.3)
.
Jakarta:
PT Gramedia Pustaka Utama.
Gaya MLA
Kurniawan, Cahyadi.
"It's Easy ... Building Up a Business".
Cet.3
Jakarta:
PT Gramedia Pustaka Utama,
2018.
Text.