Place a set of parentheses at the end of a sentence you wish to cite. Place them before the period that ends the sentence.
List the author's last name in the parentheses first. Capitalize the name. List both authors' names if there are two, and separate them with the word "and." List the prior author's name followed by "et al." if the journal article has several contributing authors. Place a comma after the authors' names.
List the year of publication of the article using numerical digits.
Place another comma after the publication year if citing your sources using APA (American Psychological Association) style. Write the letter "p." in lowercase following the comma, and after it write the page number of the artice within its original published magazine or book. A finished APA stye citation may read: (Johnson, 2012, p.1). Write no page number if you are citing in MLA (Modern Language Association), CSE (Council of Science Editors) or ACS (American Chemical Society) style. A finished citation in these styles may read: (Johnson, 2012).