Primary sources provide firsthand information, while secondary sources analyze primary sources. Tertiary sources compile information without presenting new data.
Primary sources are firsthand accounts or original works, such as interviews, letters, speeches, and published scientific research. An example is a letter from a soldier describing their experience in a war. Secondary sources interpret or analyze primary sources, like books, journal articles, and documentaries. An example is a book discussing the impact of World War II on society.
Tertiary sources compile information from primary and secondary sources, such as encyclopedias, textbooks, and some websites. They provide an overview or summary of a topic without presenting new information.
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