Citation Question

[Marcos Silva]

I apologize if this question has been covered in previous discussions. I am
new to the list.

How does one site an item found in an database, especially one where the URL
undergoes constant change?

For example:
http://cec.org/cgi-shl/dbml.exe?Template=/cectemplates/NewData&varlan=Englis
h&vardate=60&unique=48

Many thanks,

Marcos Silva
Information Specialist
NAFTA Commission for Environmental Cooperation
393 rue St-Jacques, West, Bureau 200
Montreal, Quebec, Canada  
H2Y 1N9

Voice: (514)350-4348
Fax:   (514)350-4314
Internet: msilva at ccemtl.org