Spencer, D. L. (1970). Technology gap in perspective: Strategy of international technology transfer. New York: Spartan Books.
استشهاد بنمط شيكاغوSpencer, Daniel Lloyd. Technology Gap in Perspective: Strategy of International Technology Transfer. New York: Spartan Books, 1970.
MLA استشهادSpencer, Daniel Lloyd. Technology Gap in Perspective: Strategy of International Technology Transfer. New York: Spartan Books, 1970.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.