The best source for computing liquid compressibilities in hydrocarbon systems is the API Technical Data Book, Petroleum Refining (published by the American Petroleum Institute). This is available in most technical libraries.
By the way, the liquid compressibility is NOT the thermal expansion coefficient that was mentioned by Mutt on June 27.
liquid compressibility is covered in THE PHYSICS OF HIGH PRESSURE, by P. W. Bridgman. My copy is by Dover Publications. He gives compressibility data for many liquids. However his example calculation for ether has an error. the extensions from kg-cm to other sxpressions look OK but the original value of kg-cm appears to have a decimal error.