APA (7e ed.) Bronvermelding

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

Chicago (17e ed.) Bronvermelding

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

MLA (9e ed.) Bronvermelding

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