TRAGAKES, E. (2020). ECONOMICS FOR THE IB DIPLOMA COURSEBOOK (3RD.). CAMBRIDGE UNIVERSITY PRESS.
芝加哥风格引文TRAGAKES, ELLIE. ECONOMICS FOR THE IB DIPLOMA COURSEBOOK. 3RD. U.K: CAMBRIDGE UNIVERSITY PRESS, 2020.
MLA引文TRAGAKES, ELLIE. ECONOMICS FOR THE IB DIPLOMA COURSEBOOK. 3RD. CAMBRIDGE UNIVERSITY PRESS, 2020.
警告：这些引文格式不一定是100％准确.