APA (7th ed.) Citation

Knox, R. W., & McFarland, W. N. (1928). Magnetic declination in Texas in 1927. U.S. Government Printing Office.

Chicago Style (17th ed.) Citation

Knox, Robert W., and W. N. McFarland. Magnetic Declination in Texas in 1927. [Washington?]: U.S. Government Printing Office, 1928.

MLA (9th ed.) Citation

Knox, Robert W., and W. N. McFarland. Magnetic Declination in Texas in 1927. U.S. Government Printing Office, 1928.

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