APA (7th ed.) Citation

Langan, J. (2000). Student CD-ROM English Skills (septima edición.). McGraw-Hill.

Chicago Style (17th ed.) Citation

Langan, John. Student CD-ROM English Skills. septima edición. Boston: McGraw-Hill, 2000.

MLA (9th ed.) Citation

Langan, John. Student CD-ROM English Skills. septima edición. McGraw-Hill, 2000.