Gaya APA
Posey, L, M., 2017-02-20, .
().
090960115
(
Textbook)
.
600:
2017-02-20.
Gaya MLA
Posey, L., Michael., 2017-02-20, .
"090960115".
Textbook
600:
2017-02-20,
.
615.1 ANI p 1.