Answer:
4. Egan, Timothy. The Worst Hard Time: The Untold Story of Those Survived the Great American Dust Bowl. Houghton Mifflin, 2006.
5. Otterbourg, Ken. "Urban Parks." National Geographic, Apr 2016, pp. 86-107
6. Majd, Sanaz. "What is Lyme Disease?" Scientific American. Nature America, Inc., 26 Apr 2016. http://www.scientificamerican.com/article/what-is-lyme-disease/
Explanation:
4. Below is the basic outline for a book citation:
Last name, First name. Title of Book. Publisher, Year of Publication.
5. Below is the basic outline for citing a digital magazine article:
Author(s). “Title of Article.” Title of Periodical, Day Month Year, pages.
6. Below is the basic outline for a website citation:
Editor, author, or compiler name (if available). “Article Name.” Name of Site. Version number (if available). Name of institution/organization affiliated with the site (sponsor or publisher), date of resource creation (if available). URL or DOI. Date you accessed it.