Citazione Stile APA (7a Edizione)

Walsh, B., & Birks, W. (2003). GCSE modern world history: Revision for OCR (1. publ.). Murray.

Citazione stile Chigago Style (17a edizione)

Walsh, Ben, e Wayne Birks. GCSE Modern World History: Revision for OCR. 1. publ. London: Murray, 2003.

Citatione MLA (9a ed.)

Walsh, Ben, e Wayne Birks. GCSE Modern World History: Revision for OCR. 1. publ. Murray, 2003.