Cita APA (7th ed.)

SPENCER DONALD D. (1982). DATA PROCESSING: AN INTRODUCTION (2ND.). CHARLES E MERRILL PUBLISHING COMPANY.

Cita Chicago (17th ed.)

SPENCER DONALD D. DATA PROCESSING: AN INTRODUCTION. 2ND. LONDON: CHARLES E MERRILL PUBLISHING COMPANY, 1982.

Cita MLA (9th ed.)

SPENCER DONALD D. DATA PROCESSING: AN INTRODUCTION. 2ND. CHARLES E MERRILL PUBLISHING COMPANY, 1982.