To get Rita's Miska Scholar title on Nam Cobanda Isle, you must first have access to Arnium. At Nam Cobanda Isle, talk to Kowz who is behind the desk. Rita will need to take a test to get the Doctoral Degree. To take the test, you must find the following books in the corresponding locations:
AREA - LOCATION At Halure in the Mayor's House - Book shelf. At Capua Torim in Fortune's Market HQ - Book shelf. At Heliord in the Investigation Room - Left side of the room. At Mantanic in the Inn - Bookshelf. At Aurnin in Aurniun's HQ - Flynn's dresser.