Gaya APA
Mattimore, B.
(2015).
21 Days To A Big Idea
(
Cetakan 1)
.
Jakarta:
PT Elex Media Komputindo.
Gaya MLA
Mattimore, Bryan.
"21 Days To A Big Idea".
Cetakan 1
Jakarta:
PT Elex Media Komputindo,
2015.
Text.