Whitaker, E. H., Purdue, S. L., & Sanderson, M. (2006). Sammy Soil: A coloring book story. [United States Deaprtment of Agriculture, Natural Resources Conservation Service].
Chicago Style (17th ed.) CitationWhitaker, Ernest H., Sandra L. Purdue, and Melanie Sanderson. Sammy Soil: A Coloring Book Story. [Washington, District of Columbia]: [United States Deaprtment of Agriculture, Natural Resources Conservation Service], 2006.
MLA (9th ed.) CitationWhitaker, Ernest H., et al. Sammy Soil: A Coloring Book Story. [United States Deaprtment of Agriculture, Natural Resources Conservation Service], 2006.
Warning: These citations may not always be 100% accurate.