Oscillator for FPGA programmer

I'm developing a FPGA programmer using LFXP6C-5TN144C as core. I'm stuck with the designing of oscillatory circuit for the same. I'm stuck with the development of 24MHz circuit at 3.3v. kindly inform me were could i get this type of crystal oscillator. I have checked onto many sites like fox electronics, electronics-manufacturers....etc.but haven't found the correct one. kindly post the reply as soon as possible, so that i can fasten my work. pls, anyone who knows a solution for this problem kindly post ur views and suggestions....