APA استشهاد

Sigurdson,Jon. (1990). Measuring the dynamic of technological change. Pinter Publishers.

استشهاد بنمط شيكاغو

Sigurdson,Jon. Measuring the Dynamic of Technological Change. London: Pinter Publishers, 1990.

MLA استشهاد

Sigurdson,Jon. Measuring the Dynamic of Technological Change. Pinter Publishers, 1990.