APA (7th ed.) Citation

Heller, D., Heller, D. C., & Van Raalte, T. C. (1991). XView reference manual (Third edition.). O'Reilly.

Chicago Style (17th ed.) Citation

Heller, Dan, Dan Contributor Heller, and Thomas Contributor Van Raalte. XView Reference Manual. Third edition. [Place of publication not identified]: O'Reilly, 1991.

MLA (9th ed.) Citation

Heller, Dan, et al. XView Reference Manual. Third edition. O'Reilly, 1991.