Rocks to Roads 17: Moving soil with the dirt scoop

Chicago citation style
Rocks to Roads 17: Moving soil with the dirt scoop. ca. 1915. Retrieved from the Digital Public Library of America, http://content.mpl.org/cdm/ref/collection/nbhs/id/137. (Accessed March 29, 2024.)
APA citation style
(ca. 1915) Rocks to Roads 17: Moving soil with the dirt scoop. Retrieved from the Digital Public Library of America, http://content.mpl.org/cdm/ref/collection/nbhs/id/137
MLA citation style
Retrieved from the Digital Public Library of America <http://content.mpl.org/cdm/ref/collection/nbhs/id/137>.
Note: These citations are programmatically generated and may be incomplete.