Gaya APA

Grey, P. (2020). Cambridge IGCSE and O Level History Option B: the 20th Century Coursebook Second edition (2nd Ed). Malaysia: Cambrige University Press.

Gaya MLA

Grey, Paul. "Cambridge IGCSE and O Level History Option B: the 20th Century Coursebook Second edition". 2nd Ed Malaysia: Cambrige University Press, 2020. Text.