Operator's and organizational maintenance manual (including repair parts and special tools list) : blank firing attachment (BFA) M19 : NSN 1005-01-091-7510 for cal. .50 M2 heavy barrel machine gun

Chicago citation style
Operator's and organizational maintenance manual (including repair parts and special tools list) : blank firing attachment (BFA) M19 : NSN 1005-01-091-7510 for cal. .50 M2 heavy barrel machine gun. 1981. Retrieved from the Digital Public Library of America, http://catalog.hathitrust.org/Record/101898588. (Accessed November 21, 2018.)
APA citation style
(1981) Operator's and organizational maintenance manual (including repair parts and special tools list) : blank firing attachment (BFA) M19 : NSN 1005-01-091-7510 for cal. .50 M2 heavy barrel machine gun. Retrieved from the Digital Public Library of America, http://catalog.hathitrust.org/Record/101898588
MLA citation style
Retrieved from the Digital Public Library of America <http://catalog.hathitrust.org/Record/101898588>.
Note: These citations are programmatically generated and may be incomplete.