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This guideline sets forth rules and factors that an editor should keep in mind while using various types of sources for verifying the statements in an article. Sources can be classified in various ways. The most useful classification is by their primary or secondary nature. Another classification is in terms of first-party or second-party.
Upselling is a sales technique where a seller invites the customer to purchase more expensive items, upgrades, or other add-ons to generate more revenue. While it usually involves marketing more profitable services or products, [1] it can be simply exposing the customer to other options that were perhaps not considered.
Among genealogists, a primary source comes from a direct witness, a secondary source comes from second-hand information or hearsay told to others by witnesses, and tertiary sources can represent either a further link in the chain or an analysis, summary, or distillation of primary and/or secondary sources. In this system, an elderly woman's ...
This wall painting found in the Roman city of Pompeii is an example of a primary source about people in Pompeii in Roman times (portrait of Terentius Neo).. In the study of history as an academic discipline, a primary source (also called an original source) is an artifact, document, diary, manuscript, autobiography, recording, or any other source of information that was created at the time ...
Secondary sources involve generalization, analysis, interpretation, or evaluation of the original information. The most accurate classification for any given source is not always obvious. Primary and secondary are relative terms, and some sources may be classified as primary or secondary, depending on how they are used.
Indirect procurement is the sourcing of goods and services not related to manufacturing for a business to enable it to maintain and develop its operations. The goods and services classified under the umbrella of indirect procurement are commonly bought for consumption by internal stakeholders (business units or functions) rather than the external customer or client.
Secondary sources may draw on primary sources and other secondary sources to create a general overview; or to make analytic or synthetic claims. [3] [4] Tertiary sources are publications such as encyclopedias or other compendia that sum up secondary and primary sources. For example, Wikipedia itself is a tertiary source.
Primary sources are very close to an event, often accounts written by people who are directly involved, offering an insider's view of an event, a period of history, a work of art, a political decision, and so on. An account of a traffic accident written by a witness is a primary source of information about the accident.