Citazione Stile APA (7a Edizione)

Blume, H. (1992). Colour atlas of the surface forms of the carth. Harvard U. Pr..

Citazione stile Chigago Style (17a edizione)

Blume, Helmut. Colour Atlas of the Surface Forms of the Carth. Cambridge: Harvard U. Pr., 1992.

Citatione MLA (9a ed.)

Blume, Helmut. Colour Atlas of the Surface Forms of the Carth. Harvard U. Pr., 1992.