APA (7th ed.) Citation

U.S. Hydrographic Office. (1938). Sailing directions for the Pacific Islands (4th ed.). Government Printing Office.

Chicago Style (17th ed.) Citation

U.S. Hydrographic Office. Sailing Directions for the Pacific Islands. 4th ed. Washington: Government Printing Office, 1938.

MLA (9th ed.) Citation

U.S. Hydrographic Office. Sailing Directions for the Pacific Islands. 4th ed. Government Printing Office, 1938.