Soil map of the world /
prepared by the Food and Agriculture Organization of the United Nations.

APA Citation

Food and Agriculture Organization of the United Nations., Unesco. (1971). Soil map of the world. Paris: Unesco.

MLA Citation

Food and Agriculture Organization of the United Nations, and Unesco. Soil Map of the World. Paris: Unesco, 1971.

Warning: These citations may not always be complete (especially for serials).