APA (7e ed.) Bronvermelding

Susan Grant. (2018). Cambridge IGCSE® and O Level Economics Coursebook (Cambridge International IGCSE) (2.). Cambridge University Press.

Chicago (17e ed.) Bronvermelding

Susan Grant. Cambridge IGCSE® and O Level Economics Coursebook (Cambridge International IGCSE). 2. Cambridge University Press, 2018.

MLA (9e ed.) Bronvermelding

Susan Grant. Cambridge IGCSE® and O Level Economics Coursebook (Cambridge International IGCSE). 2. Cambridge University Press, 2018.