Gaya APA
Harcahyo, B., 2016-11-22, .
().
415090515
(
Textbook)
.
400:
2016-11-22.
Gaya MLA
Harcahyo, Bowo., 2016-11-22, .
"415090515".
Textbook
400:
2016-11-22,
.
420.028 7 JOH s.