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Supplied information should be in the language of the manifestation. See RDA 2.3.2.11, "Use the language and script appropriate to the content of the resource being described, except where instructed to use specific terminology," and the LC-PCC PS Alternative, "Devise a title in a language and script preferred by the agency preparing the description." Houghton catalogers have chosen to interpret the latter as, we prefer the language of the manifestation in this instance.
505s can be either formatted or unformatted. When creating original records, prefer the formatted. In updating records, there is no obligation to change unformatted ones (of which there plenty!) to formatted.