APA Style

Blair, E, H., Robertson, J, A. (1973). The Philippine islands 1493-1898 volume XIII-XV (Volume XIII-XV). Mandaluyong: Cachos Hermanos, Inc.

MLA Style

Blair, Emma, Helen., Robertson, James, Alexander. "The Philippine islands 1493-1898 volume XIII-XV". Volume XIII-XV Mandaluyong: Cachos Hermanos, Inc, 1973. Buku.