APA (7th ed.) Citation

SINCLAIR, I. R., & FERNÁNDEZ ALVAREZ, M. A. (1982). Electronica digital. Alhambra.

Chicago Style (17th ed.) Citation

SINCLAIR, I. R., and M. A. FERNÁNDEZ ALVAREZ. Electronica Digital. Madrid: Alhambra, 1982.

MLA (9th ed.) Citation

SINCLAIR, I. R., and M. A. FERNÁNDEZ ALVAREZ. Electronica Digital. Alhambra, 1982.