How do I capitalize a phrase as pseudonym?

Iowa’s Political Agitator

Iowa’s political agitator < this seems to be the RDA form, but I’m not sure.

Jay Shorten

Cataloger, Monographs and Electronic Resources

Associate Professor of Bibliography

Description & Access Department

University Libraries

University of Oklahoma

Co-ordinator, Oklahoma (Tornado) NACO Funnel

Co-owner, PERSNAME-L, the list about personal names in bibliographic and authority records

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