APA (7th ed.) Citation

Staudt, W., & Hundius, O. (1907). Telegraphen-Schlüssel. Julius Springer.

Chicago Style (17th ed.) Citation

Staudt, Wilhelm, and Otto Hundius. Telegraphen-Schlüssel. Berlin: Julius Springer, 1907.

MLA (9th ed.) Citation

Staudt, Wilhelm, and Otto Hundius. Telegraphen-Schlüssel. Julius Springer, 1907.

Warning: These citations may not always be 100% accurate.