Josip Harcet; Lorraine Heinrichs; Palmira Mariz Seiler; Marlene Torres Skoumal. (2012). IB Course Companion: Maths Higher: 2nd edition (International Baccalaureate) (Pap/Cdr.). Oxford University Press.
Čikaški stil citiranja (17. izdanje)Josip Harcet; Lorraine Heinrichs; Palmira Mariz Seiler; Marlene Torres Skoumal. IB Course Companion: Maths Higher: 2nd Edition (International Baccalaureate). Pap/Cdr. Oxford University Press, 2012.
MLA način citiranja (9. izdanje)Josip Harcet; Lorraine Heinrichs; Palmira Mariz Seiler; Marlene Torres Skoumal. IB Course Companion: Maths Higher: 2nd Edition (International Baccalaureate). Pap/Cdr. Oxford University Press, 2012.
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