Example: APA parenthetical citation. Each individual is influenced by aspects of a universal “collective unconscious” called “archetypes” Jung, 2010, p. 4. When a source has two authors, include both names and separate them using an ampersand. When a source has more than two authors, include only the first author. In-text citations are usually placed at the end of a sentence or clause. which contains the information or information you wish to cite. It must precede punctuation marks like periods and commas. They argued that the measurements were necessary to obtain a valid result. Reurink et al. 2017, 118. In a Chicago footnote citation, when the author of a source is unknown, as is often the case on websites, begin the citation with the title in a full footnote. In short notes and bibliographic entries, list the organization that published it as the author. Type. Example.~ Chicago style is primarily used in the arts, humanities, and social sciences. It has two different systems: The notes-bibliography system, which includes footnotes or endnotes for specific citations and a bibliography at the end of the article. The author-date system, which includes parenthetical citations in the text and a list of references at the end of the article.