If you need books owned by Hartzler Library you can request them through Sadie, the online catalog by viewing the record for the itiem you want and then selecting the "I Need Material" and then "Off-Campus Student Request". Please note that you are a CMBA student so we will know to send the material to you.
You will be responsible to mail it back to the library when it is due.
For books not owned by EMU you may consider using interlibrary loan. However this will take additional time and you may want to contact a public library in your area about their interlibrary loan service.
Use WorldCat to access books from libraries worldwide.