I can't think of any reason you would want to use sources that are not credible. The use of even one suspect source casts doubt on the credibility of your entire writing.
It is permissible to use a copyrighted image if you cite the source it came from.
It is generally not recommended to cite an encyclopedia in academic papers, as they are considered secondary sources containing general knowledge. It is better to cite primary sources or scholarly articles for more authoritative and in-depth information. If you must use an encyclopedia for background information, try to verify the information with other more credible sources.
Credible is believable, based on information or fact.
A credible source will have accurate and up-to-date information, be written by an expert or someone with expertise in the field, cite their sources, and be free from bias or personal opinions.
A reliable and credible source would typically be written by an expert in the field, cite reputable sources, and be published by a respected publication or institution. Additionally, the information presented should be supported by evidence and not show any bias or agenda.
Finding information from credible sources is important because it ensures the accuracy and reliability of the information. Credible sources are more likely to have undergone rigorous fact-checking and adhere to high standards of accuracy, giving you confidence in the information you are using. Additionally, using credible sources helps prevent the spread of misinformation or fake news.
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"The teacher told the students to cite their sources for their report."
plagiarism
To site your sources for phelobotomy it depends with the citation that you are using.
If a source doesn't cite research or other specific sources they may not be credible and are expressing opinion rather than facts. Also if the item seems strange, outrageous, or just not true most likely it isn't credible. Look at who reported or wrote the item and find out their experience and expertise in the area they are writing or reporting. Look for more than one source for the same information.
Yes, it is always best to cite your sources to give credit to the original creator and avoid plagiarism. When in doubt, it is better to err on the side of caution and include a citation.