Volkswil, S. D. 278/00270: Saldibalans op 31 december 1940.
Cita Chicago (17th ed.)Volkswil, SM De. 278/00270: Saldibalans Op 31 December 1940.
Cita MLA (8th ed.)Volkswil, SM De. 278/00270: Saldibalans Op 31 December 1940.
Atenció: Aquestes cites poden no estar 100% correctes.