Answer: The print sources are:
Austen, Rob. Following the Rivers. Washington, DC: Brownstein & Gould; 2004. Print.
Peterson, Evangeline. The Unabridged Journals of Douglas E. Johnson. 1st ed. Vol. 1. Chicago: Anchor, 1993. Print.
Scoleville, Jason, and, Tabitha Huson. "Playing the Game." Egyptian Summit 28 Feb. 2015. Print.
The Internet sources are:
Bowerman, Katye. "Handling Eating Disorders in Teens". The Ohio Press Spinstein Inc., 27 Mar. 2006. Web. 1 Mar. 2015.
Brown, Jackson. "The Sonic Boom of Technology." News! News! News! Bronson Jakes. 6 July 2011. Web. 1 Mar. 2015.
Ziegler, Jasper. "Skydiving: Taking the Plunge." The Springdale Mirror. 24 June 2012. Web. 1 Mar. 2015.
Step-by-step explanation: Each item presented represents a works-cited entry. According MLA guidelines, when citing online sources, the word "web" needs to be included in the entry. In contrast, when citing print sources, the word "print" must appear in the entry. In that way, Austen's, Peterson's and Scoleville's works are print sources because the word "print" is included at the end of each of these entries, while Bowerman's, Brown's and Ziegler's works are online sources because the word "web" is found in these entries.