Field and depot maintenance manual :
filter units, gas particulate, 300 CFM, GED, ABC-M6, and 300 CFM, EMD, ABC-M6 (end item codes 556 and 559).
APA Citation
United States. Department of the Army. (1988). Field and depot maintenance manual: filter units, gas particulate, 300 CFM, GED, ABC-M6, and 300 CFM, EMD, ABC-M6 (end item codes 556 and 559). [Washington, D.C.]: Headquarters, Dept. of the Army.
MLA Citation
United States. Department of the Army. Field And Depot Maintenance Manual: Filter Units, Gas Particulate, 300 CFM, GED, ABC-M6, And 300 CFM, EMD, ABC-M6 (end Item Codes 556 And 559). [Washington, D.C.]: Headquarters, Dept. of the Army, 1988.
Warning: These citations may not always be complete (especially for serials).