Posescu, Alexandru
București
Cugetarea-Georgescu Delafras
[1944]
Bucureşti
Institutul Central de Statistică
Kenyon, John Samuel
Springfield
Merriam Publishers
Jaffé, Bernard
New York
Overseas
Sherrod, Robert
Becker, Carl L.
Brown, Harry
Jianu, Ionel
Căminul artei
Grew, Joseph C.