Gaya APA

Spencer, W, J. (2009). Global studies: the middle east, twelfth edition (Ed.ke-12). Singapura: KPG (Kepustakaan Populer Gramedia).

Gaya MLA

Spencer, William, J.. "Global studies: the middle east, twelfth edition". Ed.ke-12 Singapura: KPG (Kepustakaan Populer Gramedia), 2009. Textbook.