Cite

Philippine Islands / compiled and published by John Bach.

MLA

Bach, John. Philippine Islands / Compiled and Published by John Bach. J. Bach, 1911. https://collections.library.yale.edu/catalog/15824558.

APA, 6th edition

Bach, J. (1911). Philippine Islands / compiled and published by John Bach. [Maps]. J. Bach, https://collections.library.yale.edu/catalog/15824558.