Background sources (encyclopedias, dictionaries, handbooks, etc.) provide well established summary and factual information. Useful for:
basic concepts and established viewpoints
historical context and relationships to other topics
specialized terms and definitions
data, facts, formulas
Macchu Picchu
Macchu Picchu, Peru
Encyclopedias and Dictionaries for Linguistics (general)
Specialized encyclopedias and dictionaries can provide basic background and overviews of topics in languages, linguistics, sociolinguistics and language teaching,
International resource. Covers fields of: linguistics, anthropology, education, psychology, language acquisition, language pathology, cognitive science, sociology, the law, the media, medicine & computer science. The most authoritative, up-to-date, comprehensive, and international reference source in its field