When no date is given on the cover or indicia.
No date is noted on the title page or copyright page.
a catalog entry indicating that the date of publication does not appear in the book, nor has it been established by research. If a date can be established by external evidence, the catalog entry will read, for example, “n.d. (1948)”.
When there is no date given on the cover or indicia page.
There is no date of publication printed in the book
No date of publication mentioned within the book.
