It depends on exactly what you mean. Facts are not copyrightable, and format for bibliographic entries is fixed. read more
Citations have a fixed format and should match any other use of that citation. However, copying the reference list of another writer is plagiarism as you are presenting the reference list — the product of a literature search ie their work — as your own work. read more
When plagiarism is discussed, most people picture someone handing in a paper they copied from a Web site, a friend, or some other source. This is clearly plagiarism because: The person did not do any original research or writing. read more