Cita APA (7th ed.)

(1985). The nautical almanac: For the year 1987. U.S. Govt.Print. Off.

Cita Chicago (17th ed.)

The Nautical Almanac: For the Year 1987. Washington, D.C: U.S. Govt.Print. Off, 1985.

Cita MLA (9th ed.)

The Nautical Almanac: For the Year 1987. U.S. Govt.Print. Off, 1985.