APA (7th ed.) Citation

Office, U. S. H. (1927). Time zone chart of the world. Washington, D.C. : United States. Hydrographic Office.

Chicago Style (17th ed.) Citation

Office, United States. Hydrographic. Time Zone Chart of the World. Washington, D.C. : United States. Hydrographic Office, 1927.

MLA (9th ed.) Citation

Office, United States. Hydrographic. Time Zone Chart of the World. Washington, D.C. : United States. Hydrographic Office, 1927.

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