- AKA: Periodical, Periodical Issue, Issue.
- See: Conference Proceeding.
- A periodical publication, or just periodical, is a published work that appears in a new edition on a regular schedule. The most familiar examples are the newspaper, often published daily, or weekly; or the magazine, typically published weekly, monthly or as a quarterly. Other examples would be a newsletter, a literary journal or learned journal, or a yearbook.
- These examples all are related to the idea of an indefinitely continuing cycle of production and publication: newspapers plan to continue publishing, not to stop after a predetermined number of editions. A novel, in contrast, might be published in monthly parts, a method revived after the success of The Pickwick Papers by Charles Dickens. This approach is called part-publication, particularly when each part is from a whole work, or a serial, for example in comic books or manga. It flourished in the middle of the nineteenth century, for example with Abraham John Valpy's Delphin Classics, and was not restricted to fiction.
- The International Standard Serial Number (ISSN) is to periodical publications what the ISBN is to books: a standardized reference number.
- (Hjørland, 2007) ⇒ Birger Hjørland. (2007). “Core Concepts in Library and Information Science (LIS)."
- Periodicals are publications which a published in units with no pre-established number of issues or ending data.
- Periodicals include journals, messages, negotiations and reports issued by associations and companies in addition to series of monographs, yearbooks, directories, newspapers etc.
- Multivolume encyclopedias are not defined as periodicals, because they are supposed to be finished sometime in the future.
- Simon Eliot, and Jonathan Rose. (2007). “A Companion to the History of the Book".