Search for more books on your topic using these online / ebook databases listed below. 
(Some of these eBooks are available to download into your mobile devices.)
These e-books are just samples. You can search the databases that contain these e-books with the databases to your left.
While these books are mostly titled for nurses and physicians, you can still use them to help with your research for the field of Patient Care Technician.
ABC of Clinical Professionalism by 
The ADA Practical Guide to Patients with Medical Conditions by 
Med Surg Notes by 
Nursing Informatics for the Advanced Practice Nurse by 
Nursing Procedures Made Incredibly Easy! by 
Scope and Standards of Practice for Professional Telehealth Nursing by