The listing agent's information is there in the Trulia listing. It's CL Ross with Canoa Ranch Realty. You can find her contact info in the MLS under membership (in the GV MLS).
I hope that helps and good luck to you and your clients!
I have researched this property... it was sold Feb. 1st, 2010 for 228k. It does not look like it is for sale now. It is in in Pima County - that's how I found it through iMapp. I think for any more information, you'd have to drive by the house and see if there is a for sal sign up, maybe a FSBO ??? Good luck.