Gaya APA
CAHYATI, A.
(2017).
10 WAYS TO STAY POSITIVE
(
CET.1)
.
Yogyakarta:
Cemerlang Publishing.
Gaya MLA
CAHYATI, ALVIANA.
"10 WAYS TO STAY POSITIVE".
CET.1
Yogyakarta:
Cemerlang Publishing,
2017.
Text.