When quoting or paraphrasing another person's words or ideas, credit must be given to that person. This is done with an in-text citation.
In the Citation-Sequence system used by CSE, the in text citation is a number, either in superscript or in parentheses. The notations go in numerical order and correspond to the numbered references given at the end of the paper.
In-text citation
It is important to monitor heart failure patients as they begin exercising (1).
OR
It is important to monitor heart failure patients as they begin exercising1.
End citation
1. Smart N, Fang ZY, Marwick TH. A practical guide to exercise training for heart failure patients. J Card
Fail. 2003;9(1):49-58.