Gaya APA
Chowdhury, G., Chowdhury, S. (2001).
Information sources and searching on the world wide web .
London:
The Library Association.
Gaya MLA
Chowdhury, GG., Chowdhury, Sudatta.
"Information sources and searching on the world wide web".
London:
The Library Association,
2001.
Textbook.