1. Economic Education Retrospective
2. Board of Governors of the Federal Reserve System (2020). Federal reserve actions to support the flow of credit to households and businesses. March 26. Press Release. https://www.federalreserve.gov/newsevents/pressreleases/monetary20200315b.htm.
3. College Board (2020). AP Macroeconomics course and exam description. https://apcentral.collegeboard.org/pdf/ap-macroeconomics-course-and-exam-description.pdf.
4. Council for Economic Education (2010). Voluntary national content standards in economics. https://www.councilforeconed.org/wp-content/uploads/2012/03/voluntary-national-content-standards-2010.pdf. second edition