APA (7th ed.) Citation

Sigg, O. G. (1978). Die eidgenössischen Volksinitiativen, 1892-1939.

Chicago Style (17th ed.) Citation

Sigg, Oswald Georg. Die Eidgenössischen Volksinitiativen, 1892-1939. 1978.

MLA (9th ed.) Citation

Sigg, Oswald Georg. Die Eidgenössischen Volksinitiativen, 1892-1939. 1978.

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