APA-referens (7:e uppl.)

TRAGAKES, E. (2020). ECONOMICS FOR THE IB DIPLOMA COURSEBOOK (3RD.). CAMBRIDGE UNIVERSITY PRESS.

Chicago-referens (17:e uppl.)

TRAGAKES, ELLIE. ECONOMICS FOR THE IB DIPLOMA COURSEBOOK. 3RD. U.K: CAMBRIDGE UNIVERSITY PRESS, 2020.

MLA-referens (9:e uppl.)

TRAGAKES, ELLIE. ECONOMICS FOR THE IB DIPLOMA COURSEBOOK. 3RD. CAMBRIDGE UNIVERSITY PRESS, 2020.