Pollution Abatement Div. lab samples in tubes

Chicago citation style
Pollution Abatement Div. lab samples in tubes. 1977-07-01. Retrieved from the Digital Public Library of America, http://ark.digitalcommonwealth.org/ark:/50959/zk51zd691. (Accessed July 19, 2018.)
APA citation style
(1977-07-01) Pollution Abatement Div. lab samples in tubes. Retrieved from the Digital Public Library of America, http://ark.digitalcommonwealth.org/ark:/50959/zk51zd691
MLA citation style
Retrieved from the Digital Public Library of America <http://ark.digitalcommonwealth.org/ark:/50959/zk51zd691>.
Note: These citations are programmatically generated and may be incomplete.