APA (7th ed.) Citation

Semper, C. (1975). German travelers on the Cordillera (1860-1890). Filipiniana Book Guild.

Chicago Style (17th ed.) Citation

Semper, Carl. German Travelers on the Cordillera (1860-1890). Manila: Filipiniana Book Guild, 1975.

MLA (9th ed.) Citation

Semper, Carl. German Travelers on the Cordillera (1860-1890). Filipiniana Book Guild, 1975.

Warning: These citations may not always be 100% accurate.