APA (7th ed.) Citation

Philippines. Weather Bureau & Zwack, G. M. (1910). Return of Halley's comet and popular apprehensions. Bureau of Printing.

Chicago Style (17th ed.) Citation

Philippines. Weather Bureau and George M. Zwack. Return of Halley's Comet and Popular Apprehensions. Manila, Philippines: Bureau of Printing, 1910.

MLA (9th ed.) Citation

Philippines. Weather Bureau and George M. Zwack. Return of Halley's Comet and Popular Apprehensions. Bureau of Printing, 1910.