Thomas, S., Prowse, D., & Knight, C. (1987). Concept geography (Teachers' book, 1. publ., reprinted.). Murray.
Citazione stile Chigago Style (17a edizione)Thomas, Spencer, Duncan Prowse, e Cedric Knight. Concept Geography. Teachers' book, 1. publ., reprinted. London: Murray, 1987.
Citatione MLA (9a ed.)Thomas, Spencer, et al. Concept Geography. Teachers' book, 1. publ., reprinted. Murray, 1987.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.