"Plagiarism—taking the writings or ideas of another and passing them off as one’s own—of any type represents unethical conduct."
ACS Style Guide, 3rd Edition, page 7.Probably not unless you plan on publishing your work publically (thesis or dissertation, journal article, etc). If you want to reuse images/figures from another author in your published work use the Copyright Clearance Center to find permission rules for various publishers.
You can also email the librarian for more help.
Citation managers (like RefWorks) allow you to save your references and drop them into papers or bibliographies in the format of your choice. University of Akron subscribes to RefWorks, and it works well, but there are some other options.