Gaya APA
Koch, Arthur. (1992).
Speaking With a Purpose .
New Jersey:
Prentice-Hall, inc.
Gaya Chicago
Koch, Arthur.
Speaking With a Purpose.
New Jersey:
Prentice-Hall, inc,
1992.
Text.
Gaya MLA
Koch, Arthur.
Speaking With a Purpose.
New Jersey:
Prentice-Hall, inc,
1992.
Text.
Gaya Turabian
Koch, Arthur.
Speaking With a Purpose.
New Jersey:
Prentice-Hall, inc,
1992.
Print.