Gaya APA
Koch, Arthur. (1998).
Speaking with a purpose / Arthur Koch (4th ed).
Boston:
Allyn & Bacon.
Gaya Chicago
Koch, Arthur.
Speaking with a purpose / Arthur Koch.
4th ed
Boston:
Allyn & Bacon,
1998.
Text.
Gaya MLA
Koch, Arthur.
Speaking with a purpose / Arthur Koch.
4th ed
Boston:
Allyn & Bacon,
1998.
Text.
Gaya Turabian
Koch, Arthur.
Speaking with a purpose / Arthur Koch.
4th ed
Boston:
Allyn & Bacon,
1998.
Print.