Gaya APA
Sperandio, G, J., 2017-09-14, .
().
1215150917
(
Textbook)
.
:
2017-09-14.
Gaya MLA
Sperandio, Glen, J.., 2017-09-14, .
"1215150917".
Textbook
:
2017-09-14,
.
611.018 1 SUB b 2.