Gather the information you want to cite from the specific issue you are citing, using this format: author's first and last name, title of the article, date of publication, and the page number(s) of the article.
Determine your citation format. For an MLA (Modern Language Association) citation, format the information in the following way: Author's last name, author's first name. "Title of the Article." "National Geographic." date of publication (day, month, year): page number(s). Print. Make sure to indent all lines after the first, creating a hanging indent.
Note the volume number and issue number of the specific issue of "National Geographic" you are using, when citing in APA, American Psychological Association format.
Format the citation in this way, using the APA citation format: Author's last name, author's first initial. (Date of publication). Title of article. "National Geographic," volume number (issue number), page number(s). Make sure to indent all lines after the first, creating a hanging indent.