APA (7th ed.) Citation

(1931). Northwest history. Mining. Discovery. 1931-04-05.

Chicago Style (17th ed.) Citation

Northwest History. Mining. Discovery. 1931-04-05. 1931.

MLA (9th ed.) Citation

Northwest History. Mining. Discovery. 1931-04-05. 1931.

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