Gaya APA
Mansur, W. et al
(2017).
Be calm, be strong be greatfull
(
edisi 1)
.
Depok:
Kata Depan.
Gaya MLA
Mansur, Wirda. et al.
"Be calm, be strong be greatfull".
edisi 1
Depok:
Kata Depan,
2017.
Text.