International Business Machines Corporation. International Technical Support Organization, ebrary, Inc, & Lovelace, D. (2003). VSAM demystified (2nd ed.). IBM, International Technical Support Organization.

International Business Machines Corporation. International Technical Support Organization, Inc ebrary, and Dave Lovelace. VSAM Demystified. 2nd ed. San Jose, CA: IBM, International Technical Support Organization, 2003.

International Business Machines Corporation. International Technical Support Organization, et al. VSAM Demystified. 2nd ed. IBM, International Technical Support Organization, 2003.