Olson, J. F. (2009). Writing skills success in 20 minutes a day (4th ed.). LearningExpress.
Chicago Style (17th ed.) CitationOlson, Judith F. Writing Skills Success in 20 Minutes a Day. 4th ed. New York, NY: LearningExpress, 2009.
MLA引文Olson, Judith F. Writing Skills Success in 20 Minutes a Day. 4th ed. LearningExpress, 2009.
警告:這些引文格式不一定是100%准確.