(1931). [Amendments to Communication instructions for U.S. Coast Guard, 1930; Change No. 1]. [publisher not identified].
Chicago Style (17th ed.) Citation[Amendments to Communication Instructions for U.S. Coast Guard, 1930; Change No. 1]. [Washington]: [publisher not identified], 1931.
MLA (9th ed.) Citation[Amendments to Communication Instructions for U.S. Coast Guard, 1930; Change No. 1]. [publisher not identified], 1931.
Warning: These citations may not always be 100% accurate.