Gaya APA
2017-09-12, ., 2016-11-30, .
().
267130415
(
Textbook)
.
600:
2016-11-30.
Gaya MLA
2017-09-12, ., 2016-11-30, .
"267130415".
Textbook
600:
2016-11-30,
.
615.321 SOE f.