Columbia subject headings:
Khomeini, Ruhollah--Correspondence.
Khumaynī, Aḥmad.
Harvard subject headings:
Khomeini, Ruhollah--Correspondence.
Khumaynī, Aḥmad.
Princeton subject headings:
Khomeini, Ruhollah--Correspondence.
Khumaynī, Aḥmad.