(1972). Mean percentage frequencies and monthly tracks of tropical cyclones (rev. 1973.). [s.n.].
Cita Chicago (17th ed.)Mean Percentage Frequencies and Monthly Tracks of Tropical Cyclones. rev. 1973. [Manila]: [s.n.], 1972.
Cita MLA (9th ed.)Mean Percentage Frequencies and Monthly Tracks of Tropical Cyclones. rev. 1973. [s.n.], 1972.
Atenció: Aquestes cites poden no estar 100% correctes.