When doing research, researchers usually rely on what is called “secondary”[1] and “tertiary”[2] sources. These are compilations and reinterpretations of original other sources that are called “primary”[3][4] sources. These secondary and tertiary sources are usually enough and sometimes even obligatory. However, in some areas and topics of research, it is desirable, and sometimes necessary, to go back to the original, primary sources. For example, in comparative studies[5] and studies of representations of specific concepts/topics. This article will help you find and extract the original primary sources from your secondary and tertiary sources.
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