Columbia subject headings:
Architecture--Turkey--Istanbul--Guidebooks.
Istanbul (Turkey)--Buildings, structures, etc.--Guidebooks.
Istanbul (Turkey)--Guidebooks.
Harvard subject headings:
Architecture--Turkey--Istanbul--Guidebooks.
Istanbul (Turkey)--Buildings, structures, etc.--Guidebooks.
Istanbul (Turkey)--Guidebooks.
Princeton subject headings:
Architecture--Turkey--Istanbul--Guidebooks.
Guidebooks.
Istanbul (Turkey)--Buildings, structures, etc.--Guidebooks.
Istanbul (Turkey)--Guidebooks.