Gaya APA
Worthington, Julian. (1981).
Know How Acknowledgements .
Singapura:
Orbis Publishing Limited.
Gaya Chicago
Worthington, Julian.
Know How Acknowledgements.
Singapura:
Orbis Publishing Limited,
1981.
Text.
Gaya MLA
Worthington, Julian.
Know How Acknowledgements.
Singapura:
Orbis Publishing Limited,
1981.
Text.
Gaya Turabian
Worthington, Julian.
Know How Acknowledgements.
Singapura:
Orbis Publishing Limited,
1981.
Print.