Walther, F. E. Statement 1968: Franz Erhard Walther. 1940 - 1991.(1998).
Cita Chicago (17th ed.)Walther, Franz Erhard. "Statement 1968: Franz Erhard Walther." 1940 - 1991.(1998) .
Cita MLA (8th ed.)Walther, Franz Erhard. "Statement 1968: Franz Erhard Walther." 1940 - 1991.(1998), .
Atenció: Aquestes cites poden no estar 100% correctes.