As a student, you are responsible for the content of your undergraduate research and, thus, for determining whether your proposed use of copyrighted works qualifies as fair dealing or whether you need to seek permission. The Copyright Advisor (mrucopyright@mtroyal.ca) can assist you through one on one consultations or you can attend a copyright workshop. 

While the Copyright Advisor can assist you with your fair dealing analysis, they cannot provide a "definitive" answer. The limits of what can be included under the fair dealing exception is a matter of interpretation and involves a number of factors. If there is a dispute with the copyright-holder regarding such an interpretation of fair dealing, the ultimate decision-maker would be the courts. However, in practice, for non-commercial uses (such as short excerpts included in your work) with minimal economic impact on the copyright holder, such disputes are often resolved between the parties themselves.