Citations are a way to reference a work (journal article, conference abstract, website, report, etc.) A citation includes standard elements that allow one to locate the work. Elements may typically include components such as: author/s, title of work, title of source (e.g., journal title), publication year, pages, ID#, etc.
Citation styles are a defined way to format how citations to work appear and what they include. Citation styles may be discipline specific or source specific.
Use the style manual or author guidelines (journal) for standards on how to format in a particular style. (*see AMA Manual Style example listed below)
Reference managers can be used to instantly format citations to match a particular style. You can learn more about some reference manger options here:Reference Managers.
Example: Conference Proceeding Abstract in AMA Style
Khuri FR, Lee JJ, Lipman SM, et al. Isotretinoin effects on head and neck cancer recurrence and second primary tumors. In: Proceedings from the American Society of Clinical Oncology; May 31-June 3, 2003; Chicaco, IL. Abstract 359.
Example: Chapter in Book in AMA Style
Solenskey R. Drug allergy: desensitization and treatment of reactions to antibiotics and aspirin. In: Lockey P, ed. Allergens and Allergen Immunotherapy. 3rd ed. New York, NY: Marcel Dekker; 2004:585-606.