Gaya APA
Sayrief, W, R., 2016-10-06, .
().
922890816
(
Textbook)
.
600:
2016-10-06.
Gaya MLA
Sayrief, Winny, Riviani., 2016-10-06, .
"922890816".
Textbook
600:
2016-10-06,
.
615.704 1 Har i 2.