APA (7th ed.) Citation

U.S. Coast and Geodetic Survey. (1943). Seismological Bulletin; April, May, June 1943. [s.n.].

Chicago Style (17th ed.) Citation

U.S. Coast and Geodetic Survey. Seismological Bulletin; April, May, June 1943. [Washington]: [s.n.], 1943.

MLA (9th ed.) Citation

U.S. Coast and Geodetic Survey. Seismological Bulletin; April, May, June 1943. [s.n.], 1943.

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