APA استشهاد

Head, R. V. (1964). Real - time business systems. Holt Rinchart and Winston.

استشهاد بنمط شيكاغو

Head, Robert V. Real - Time Business Systems. New York: Holt Rinchart and Winston, 1964.

MLA استشهاد

Head, Robert V. Real - Time Business Systems. Holt Rinchart and Winston, 1964.