Wikipedia:Contents/Outlines/Reference
- Knowledge – familiarity, awareness or understanding of someone or something, such as facts, information, descriptions, or skills, which is acquired through experience or education by perceiving, discovering, or learning. Knowledge can refer to a theoretical or practical understanding of a subject. It can be implicit (as with practical skill or expertise) or explicit (as with the theoretical understanding of a subject); it can be more or less formal or systematic.
- Reference works – documents, such as scholarly papers, books, encyclopedias or periodicals (or their electronic equivalents, usually available online), to which one can refer for information.
- Books – a book is a set of written, printed, illustrated sheets, made of ink, paper, parchment, or other materials, usually fastened together to hinge at one side. Books are used to convey knowledge and other information.
- Dictionaries
- Encyclopedias
- General subject outlines (trees of knowledge)
- Taxonomies (trees) of knowledge included within larger works
- Subject classification systems
- Academic classification systems
- Library classification systems