Analysis of information sources in references of the Wikipedia article "Isaac Asimov" in Vietnamese language version.
The date of my birth, as I celebrate it, was January 2, 1920. It could not have been later than that. It might, however, have been earlier. Allowing for the uncertainties of the times, of the lack of records, of the Jewish và Julian calendars, it might have been as early as ngày 4 tháng 10 năm 1919. There is, however, no way of finding out. My parents were always uncertain and it really doesn't matter. I celebrate ngày 2 tháng 1 năm 1920, so let it be.
