Gaya APA
Communication skills second edition. (2019).
New York:
.
Gaya Chicago
Communication skills second edition.
2.
New York:
,
2019.
Ebook.
Gaya MLA
Communication skills second edition.
2.
New York:
,
2019.
Ebook.
Gaya Turabian
Communication skills second edition.
New York:
,
2019.
Ebook.