Plagiarism is committed when one author uses another work (typically the work of another author) without permission, credit, or acknowledgment. Plagiarism takes different forms, from literal copying to paraphrasing the work of another. Substantial copying is reproducing a substantial part of a work, without permission and acknowledgment of the original source. In determining what is “substantial,” both the quantity and the quality of the copied content are relevant. Quality refers to the relative value of the copied text in proportion to the work as a whole. Where the essence of a work has been reproduced, even if only a small part of the original work, plagiarism may have occurred. To determine whether unacceptable paraphrasing has occurred, you should apply a test similar to that for substantial copying and look at the quantity and quality of what has been taken. We use iTenticate software to prevent plagiarism.