In general, follow the guidelines in DCRM(B), Area 5, DCRMR, Element 6, or RDA Chapters 3 and 7.
...
- For difference in height of the publication to the height of the binding, follow the guidelines as stated in DCRMB 5D1.2 or DCRMR 6.24.331.2.
Example:
- $$c 12 cm bound to 20 cm
- In the case of bound-withs where individual pieces inside the volume differ in size by 3 centimeters or more, give the height of the binding in $$c and, if deemed necessary, make a more extensive descriptive note about the height of the individual title in the holdings record.
...
- For hand-press publications, add the bibliographical format in parentheses following the size statement in $$c.
Example:
- $$c 20 cm (4to)
- CAVEAT: Beware of book dealer's descriptions of format, which is usually based on size rather than an expression of how the original sheet was imposed and folded.
...