Read the following source listings:
1. Tori Avery. “Explore the Delicious History of Ice Cream.” PBS Food, July 10 2012, http://www.pbs.org/food/the-history-kitchen/explore-the-delicious-history-of-ice-cream/.
2. Avey, Tori. “Explore the Delicious History of Ice Cream.” PBS Food, The History Kitchen, 10 July 2012, http://www.pbs.org/food/the-history-kitchen/explore-the-delicious-history-of-ice-cream/. Accessed 22 May 2018.
3. Avey, Tori. “Explore the Delicious History of Ice Cream.” PBS Food, The History Kitchen, July 10, 2012, http://www.pbs.org/food/the-history-kitchen/explore-the-delicious-history-of-ice-cream/.
4. Avey, Tori. Explore the Delicious History of Ice Cream. PBS Food, The History Kitchen, 10 July 2012, http://www.pbs.org/food/the-history-kitchen/explore-the-delicious-history-of-ice-cream/. Accessed 22 May 2018.
5. Tori Avery. “Explore the Delicious History of Ice Cream.” PBS Food, The History Kitchen, 10 July 2012, http://www.pbs.org/food/the-history-kitchen/explore-the-delicious-history-of-ice-cream/. Accessed 22 May 2018.