Operator and organizational maintenance manual :
compressor, air, reciprocating, power driven, 15 cfm, 3500 psi, 4 wheel mounted, winterized (Stewart-Warner model 12021A), FSN 4310-231-5513.

APA Citation

United States. Department of the Army. (1990). Operator and organizational maintenance manual: compressor, air, reciprocating, power driven, 15 cfm, 3500 psi, 4 wheel mounted, winterized (Stewart-Warner model 12021A), FSN 4310-231-5513. [Washington, D.C.]: Headquarters, Dept. of the Army.

MLA Citation

United States. Department of the Army. Operator And Organizational Maintenance Manual: Compressor, Air, Reciprocating, Power Driven, 15 Cfm, 3500 Psi, 4 Wheel Mounted, Winterized (Stewart-Warner Model 12021A), FSN 4310-231-5513. [Washington, D.C.]: Headquarters, Dept. of the Army, 1990.

Warning: These citations may not always be complete (especially for serials).