MLA

Los Angeles County (Calif.). Dept. of County Engineer. Map of county of Los Angeles / Harvey T. Brandt, County Engineer.. BRBL_00606. 1974]. https://collections.library.yale.edu/catalog/15818715.

APA, 6th edition

Los Angeles County (Calif.). Dept. of County Engineer. (["BRBL_00606"])(1974])[Map of county of Los Angeles / Harvey T. Brandt, County Engineer.]. https://collections.library.yale.edu/catalog/15818715.