APA Style
Thumboo, Edwin. (2001).
The three circles of english / Edwin Thumboo .
Singapore:
Unipress.
Chicago Style
Thumboo, Edwin.
The three circles of english / Edwin Thumboo.
Singapore:
Unipress,
2001.
Text.
MLA Style
Thumboo, Edwin.
The three circles of english / Edwin Thumboo.
Singapore:
Unipress,
2001.
Text.
Turabian Style
Thumboo, Edwin.
The three circles of english / Edwin Thumboo.
Singapore:
Unipress,
2001.
Print.