Columbia subject headings:
Islamic law--Interpretation and construction.
Shīʻah--Customs and practices.
Shīʻah--Doctrines.
Harvard subject headings:
Shīʻah--Doctrines
Shīʻah--Customs and practices.
Princeton subject headings:
Islamic law--Interpretation and construction.
Shīʻah--Customs and practices.
Shīʻah--Doctrines.