Challoner Jack. Rockes, minerals and the changing earth. Southwater.
Citazione stile Chigago Style (17a edizione)Challoner Jack. Rockes, Minerals and the Changing Earth. Southwater.
Citatione MLA (9a ed.)Challoner Jack. Rockes, Minerals and the Changing Earth. Southwater.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.