Ex. Me DuCit ChrIstVs = 1704.
188. When the place or date is given falsely, whether intentionally or by a typographical error, add the true place or date in brackets, if it can be ascertained.
Ex.
London, 1975 [1775]. O. Boston, 1887 [1886]. O.
Paris, 1884 [mistake for 1874]. O. En Suisse [Paris], 1769.
189. When the place or date is not given, supply it in brackets, if it can be ascertained. If neither is discoverable, write n. p. (=no place), n. d. (=no date), to show that the omission of place and date is not an oversight.
Ex. n. p., n. d. O.
190. But avoid n. d., and if possible give the decade or at least the century, even if an interrogation point must be added.
Ex.
London, [17—]. Q.