"Josip; Heinrichs, L. M. S. (2019). Mathematics Higher Level. Oxford University Press.
Chicago-čujuhus (17. p.)"Josip; Heinrichs, Lorraine; Mariz Seiler. Mathematics Higher Level. Oxford University Press, 2019.
MLA-čujuhus (9. p.)"Josip; Heinrichs, Lorraine; Mariz Seiler. Mathematics Higher Level. Oxford University Press, 2019.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.