Thom, M., Armstrong, E., & Royle, S. A. (2017). Geography for CCEA A2 Level (A2 Level, 2nd edition.). Colourpoint Educational.
Citazione stile Chigago Style (17a edizione)Thom, Martin, Eileen Armstrong, e Stephen A. Royle. Geography for CCEA A2 Level. A2 Level, 2nd edition. Newtownards, County Down, Northern Ireland: Colourpoint Educational, 2017.
Citatione MLA (9a ed.)Thom, Martin, et al. Geography for CCEA A2 Level. A2 Level, 2nd edition. Colourpoint Educational, 2017.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.