APA (7th ed.) Citation

(1871). Instructions and directions to light keepers, 6th edition. U.S. Government Printing Office.

Chicago Style (17th ed.) Citation

Instructions and Directions to Light Keepers, 6th Edition. Washington: U.S. Government Printing Office, 1871.

MLA (9th ed.) Citation

Instructions and Directions to Light Keepers, 6th Edition. U.S. Government Printing Office, 1871.

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