Gaya APA
Hartley, Peter. (1997).
Group Communication .
London, England:
Routledge.
Gaya Chicago
Hartley, Peter.
Group Communication.
London, England:
Routledge,
1997.
Text.
Gaya MLA
Hartley, Peter.
Group Communication.
London, England:
Routledge,
1997.
Text.
Gaya Turabian
Hartley, Peter.
Group Communication.
London, England:
Routledge,
1997.
Print.