Your school library should have a copy, usually in the "Reference" section. Here's a link to Amazon.com, which also has used copies available:
There is also the CRC Student Edition, which I find to be a little more practical in content. Also, there is the Lange's Handbook of Chemistry, which lists the specific gravity as 0.822 at 15°C (referenced to water at 4°C). As the name implies, Lange's contains chemistry data specifically, whereas the CRC contains a mixture of chemistry and physics data.
Steve