Pronunciation: /sɔrs bʊk/
noun a book that is used as a primary source of information
A1 I found a source book at the library to help me with my research project.
A2 The source book provided valuable information on the history of ancient civilizations.
B1 Students are required to use at least three different source books for their essays.
B2 The professor recommended a specific source book for further reading on the topic.
C1 The source book is considered a seminal work in the field of psychology.
C2 Researchers often cite this source book as a primary reference in their studies.
formal The source book provided detailed information on the history of the ancient civilization.
informal I found all the answers in the source book for my research project.
slang I'll just skim through the source book to get the main points.
figurative The source book of wisdom is said to be experience.
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