Computer Systems Laboratory (U.S.). Systems and Software Technology Division. (1996). Application Portability Profile (APP): The U.S. Government's open system environment profile version 3.0. U.S. Department of Commerce, Technology Administration, National Institute of Standards and Technology ; For sale by the Supt. of Docs., U.S. G.P.O..

Computer Systems Laboratory (U.S.). Systems and Software Technology Division. Application Portability Profile (APP): The U.S. Government's Open System Environment Profile Version 3.0. Gaithersburg, MD : Washington, DC: U.S. Department of Commerce, Technology Administration, National Institute of Standards and Technology ; For sale by the Supt. of Docs., U.S. G.P.O., 1996.

Computer Systems Laboratory (U.S.). Systems and Software Technology Division. Application Portability Profile (APP): The U.S. Government's Open System Environment Profile Version 3.0. U.S. Department of Commerce, Technology Administration, National Institute of Standards and Technology ; For sale by the Supt. of Docs., U.S. G.P.O., 1996.