APA (7th ed.) Citation

(1989). Acer 500 User's guide: The gateway to personal computing. Acer.

Chicago Style (17th ed.) Citation

Acer 500 User's Guide: The Gateway to Personal Computing. Taipéi: Acer, 1989.

MLA (9th ed.) Citation

Acer 500 User's Guide: The Gateway to Personal Computing. Acer, 1989.