Gaya APA
Cahyanti, A.
(2017).
10 ways to stay positive
(
Cet. 1)
.
Sleman:
Cemerlang Publishing.
Gaya MLA
Cahyanti, Alviana.
"10 ways to stay positive".
Cet. 1
Sleman:
Cemerlang Publishing,
2017.
Text.