Jensen, H. .. (1970). Sign, Symbol and Script: An account of man's effort to write. London: Allen and Unwin.
استشهاد بنمط شيكاغوJensen, Hans. Sign, Symbol and Script: An Account of Man's Effort to Write. London: Allen and Unwin, 1970.
MLA استشهادJensen, Hans. Sign, Symbol and Script: An Account of Man's Effort to Write. London: Allen and Unwin, 1970.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.