Dilley, L., Earle, J., Keats, G., Ravenscroft, G., & Euston-Brown, K. (2009). Focus on geography (First publ. 2006, 14. impr.). Maskew Miller Longman.
Citazione stile Chigago Style (17a edizione)Dilley, Liz, John Earle, Graham Keats, G. Ravenscroft, e Kim Euston-Brown. Focus on Geography. First publ. 2006, 14. impr. Pinelands, Cape Town: Maskew Miller Longman, 2009.
Citatione MLA (9a ed.)Dilley, Liz, et al. Focus on Geography. First publ. 2006, 14. impr. Maskew Miller Longman, 2009.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.