Cita APA (7a ed.)

Hubbell, T. (1999). Sams teach yourself Cobol in 24 hours. Sams Pub..

Cita Chicago Style (17a ed.)

Hubbell, Thane. Sams Teach Yourself Cobol in 24 Hours. Indianapolis, IN: Sams Pub., 1999.

Cita MLA (8a ed.)

Hubbell, Thane. Sams Teach Yourself Cobol in 24 Hours. Sams Pub., 1999.

Precaución: Estas citas no son 100% exactas.