APA (7th ed.) Citation

Held, G. (1987). IBM PC & PC XT user's reference manual (2nd ed.). Hayden Books.

Chicago Style (17th ed.) Citation

Held, Gilbert. IBM PC & PC XT User's Reference Manual. 2nd ed. Indianapolis, Ind., USA: Hayden Books, 1987.

MLA (9th ed.) Citation

Held, Gilbert. IBM PC & PC XT User's Reference Manual. 2nd ed. Hayden Books, 1987.