MLA

The Blue Book for Visitors, Tourists, and Those Seeking a Good Time While in San Antonio, Texas 1911/1912. s.n., 0AD. https://collections.library.yale.edu/catalog/33195500.

APA, 6th edition

The Blue book for visitors, tourists, and those seeking a good time while in San Antonio, Texas 1911/1912. (0 C.E.). [Periodicals, Directories]. s.n. https://collections.library.yale.edu/catalog/33195500.