Gaya APA
Stone, Douglas. (1999).
Difficult Conversations (First Publish).
London:
Penguin Books.
Gaya Chicago
Stone, Douglas.
Difficult Conversations.
First Publish
London:
Penguin Books,
1999.
Text.
Gaya MLA
Stone, Douglas.
Difficult Conversations.
First Publish
London:
Penguin Books,
1999.
Text.
Gaya Turabian
Stone, Douglas.
Difficult Conversations.
First Publish
London:
Penguin Books,
1999.
Print.