Lumsden, G. I. (1994). Geology and the environment in western Europe: : a coordinated statement by the western european geological surveys. Oxford: Oxford Univ. Pr., Inc..
Παραπομπή Chicago StyleLumsden, G. Innes. Geology and the Environment in Western Europe: : A Coordinated Statement By the Western European Geological Surveys. Oxford: Oxford Univ. Pr., Inc., 1994.
Παραπομπή MLALumsden, G. Innes. Geology and the Environment in Western Europe: : A Coordinated Statement By the Western European Geological Surveys. Oxford: Oxford Univ. Pr., Inc., 1994.
Πρόσοχή: Οι παραπομπές μπορεί να μην είναι 100% ακριβείς.