Gaya APA
Pamungkas, K., 2017-09-19, .
().
1240130917
(
Textbook)
.
600:
2017-09-19.
Gaya MLA
Pamungkas, Kresno., 2017-09-19, .
"1240130917".
Textbook
600:
2017-09-19,
.
615.1 DID s 1.