Final answer:
In-text parenthetical citations allow the use of text from a source with proper citation. These citations typically include the author's name or work title and page number if available, placed in parentheses after the quote.
Step-by-step explanation:
The practice that allows one to use a sentence or paragraph of text without permission, given that a citation to the original source is provided, is the use of in-text parenthetical citations. Parenthetical citations are utilized in the body of a paper to indicate where an idea, quote, or paraphrase originates from.
When quoting the words of a source, it is crucial to introduce the material with a signal phrase and place the quotation within double quotation marks. Following the quote, a parenthetical citation, including the author's last name or a work's abbreviated title, is added. The period for the sentence is placed after the closing parenthesis. For instance, "The complexities of cellular processes are myriad" (Smith, 124).
This approach is necessary to maintain academic integrity and to avoid plagiarism. Moreover, cited passages need to be well integrated into your text, providing clear attribution. An example would be: "As noted by Elgin Slapworthy, 'Dickens remembered this period in his boyhood as both painful and humiliating' (237)." It is important to both quote judiciously and support quotations with your own analysis or commentary, thus ensuring that the original authors are appropriately credited and that the quotations enhance the writer's own narrative.