APA (7th ed.) Citation

Letwin, G., & Gates, B. (1989). El OS/2 a fondo. Anaya Multimedia.

Chicago Style (17th ed.) Citation

Letwin, Gordon, and Bill Gates. El OS/2 a Fondo. Madrid: Anaya Multimedia, 1989.

MLA (9th ed.) Citation

Letwin, Gordon, and Bill Gates. El OS/2 a Fondo. Anaya Multimedia, 1989.

Warning: These citations may not always be 100% accurate.