This worked for me:
Start /wait setup.exe /qb ADDLOCAL=SQL_DTS,Client_Components,Connectivity,SQL_Tools90,SQL_WarehouseDevWorkbench,SQLXML,Tools_Legacy,SQL_Documentation,SQL_BooksOnline
Based off this TechNet Article:
https://technet.microsoft.com/en-us/library/ms144259(v=sql.90).aspx