Clayton, G. E., & Gary E. Clayton. Economics: Principles and Practices, Reading Essentials and Note-Taking guide student workbook. New York: Glencoe/McGraw-Hill.
Trích dẫn kiểu ChicagoClayton, Gary E., và Gary E. Clayton. Economics: Principles and Practices, Reading Essentials and Note-Taking Guide Student Workbook. New York: Glencoe/McGraw-Hill.
MLA引文Clayton, Gary E., và Gary E. Clayton. Economics: Principles and Practices, Reading Essentials and Note-Taking Guide Student Workbook. New York: Glencoe/McGraw-Hill.
警告：这些引文格式不一定是100％准确.