Manila Observatorio, Philippine Islands. Weather Bureau, & Coronas, J. (1908). Typhoon-warning code of the Manila Observatory. Bureau of Print.
Cita Chicago (17th ed.)Manila Observatorio, Philippine Islands. Weather Bureau, i Jose Coronas. Typhoon-warning Code of the Manila Observatory. Manila: Bureau of Print, 1908.
Cita MLA (9th ed.)Manila Observatorio, et al. Typhoon-warning Code of the Manila Observatory. Bureau of Print, 1908.
Atenció: Aquestes cites poden no estar 100% correctes.