Gaya APA
Mager, R, F., 2016-12-19, .
().
284140415
(
Textbook)
.
500:
2016-12-19.
Gaya MLA
Mager, Robert, F.., 2016-12-19, .
"284140415".
Textbook
500:
2016-12-19,
.
579 MIS m.