Cita APA (7a ed.)

International Business Machines Corporation, Hellner, H., & Hellner, H. C. (2011). Security on IBM z/VSE (3rd ed.). IBM International Technical Support Organization.

Cita Chicago Style (17a ed.)

International Business Machines Corporation, Helmut Hellner, y Helmut Contributor Hellner. Security on IBM Z/VSE. 3rd ed. [Place of publication not identified]: IBM International Technical Support Organization, 2011.

Cita MLA (9a ed.)

International Business Machines Corporation, et al. Security on IBM Z/VSE. 3rd ed. IBM International Technical Support Organization, 2011.