The punctuation and spacing conventions described in the name heading General Information sections are also applicable to the Heading ($b) and Title ($t) subfields in field 664.Punctuation and Spacing:
The punctuation and spacing conventions described in the name heading General Information sections are also applicable to the Heading ($b) and Title ($t) subfields in field 664.
Field 664 does not end with a mark of punctuation unless the data ends with an abbreviation, an initial/letter, or data that ends with a mark of punctuation.