Blanchard, B. S., & Lowery, E. (1969). Maintainability: Principles and practices. McGraw-Hill.
Chicago-čujuhus (17. p.)Blanchard, Benjamin S., juo Edward Lowery. Maintainability: Principles and Practices. New York: McGraw-Hill, 1969.
MLA-čujuhus (9. p.)Blanchard, Benjamin S., juo Edward Lowery. Maintainability: Principles and Practices. McGraw-Hill, 1969.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.