When writing a research paper using either Modern Language Association (MLA) or American Psychological Association (APA) formats, you must cite all of your sources that you use to compile your information. In the text of your paper you will have to quote all passages that you have pulled from secondary sources and at the end of the passage you must place the name of the author and the page number of the book from which the information can be found. Sometimes, however, you may be presented with a source that does not have page numbers, which can often be the case when using Internet sources such as websites.
Write out the quote or passage from the resource that you are embedding into the text of your paper. If you are using a direct quote, make sure to put quotation marks at the beginning and end of the passage to avoid plagiarism. Even if you are paraphrasing, however, you still must cite your source if the information would not be considered common knowledge.
Place the name of the author in parentheses following the quotation marks, but before the period. For example: "This is how you cite a source" (Smith).
Place a section number or paragraph number after the author's name when there are no page numbers. For example: "It is important to always cite your sources in research papers" (Jones, section 1, paragraph 3). This can be done for both MLA and APA style papers, with the abbreviation "para. 3" being used for APA style. If there are no numbered sections, you may just leave the author's name by itself within the parentheses.